| Base | Representation |
|---|---|
| bin | 111110000010100110… |
| … | …1100000010011011000 |
| 3 | 110201220010102000011001 |
| 4 | 1330011031200103120 |
| 5 | 4140324220144230 |
| 6 | 141112231314344 |
| 7 | 12424412214610 |
| oct | 1740515402330 |
| 9 | 421803360131 |
| 10 | 133231412440 |
| 11 | 51559728125 |
| 12 | 219a2b1b9b4 |
| 13 | c7434c11b9 |
| 14 | 663c70da40 |
| 15 | 36eb8b90ca |
| hex | 1f053604d8 |
133231412440 has 128 divisors (see below), whose sum is σ = 345543045120. Its totient is φ = 45288000000.
The previous prime is 133231412437. The next prime is 133231412443. The reversal of 133231412440 is 44214132331.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (133231412437) and next prime (133231412443).
It is a Harshad number since it is a multiple of its sum of digits (28).
It is a junction number, because it is equal to n+sod(n) for n = 133231412399 and 133231412408.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (133231412443) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15668190 + ... + 15676690.
It is an arithmetic number, because the mean of its divisors is an integer number (2699555040).
Almost surely, 2133231412440 is an apocalyptic number.
133231412440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 133231412440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172771522560).
133231412440 is an abundant number, since it is smaller than the sum of its proper divisors (212311632680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
133231412440 is a wasteful number, since it uses less digits than its factorization.
133231412440 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8993 (or 8989 counting only the distinct ones).
The product of its (nonzero) digits is 6912, while the sum is 28.
Adding to 133231412440 its reverse (44214132331), we get a palindrome (177445544771).
The spelling of 133231412440 in words is "one hundred thirty-three billion, two hundred thirty-one million, four hundred twelve thousand, four hundred forty".
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