| Base | Representation |
|---|---|
| bin | 11011101001010… |
| … | …00000111100000 |
| 3 | 121011100201110200 |
| 4 | 31310220013200 |
| 5 | 433331241431 |
| 6 | 35002225200 |
| 7 | 5514054114 |
| oct | 1564500740 |
| 9 | 534321420 |
| 10 | 231899616 |
| 11 | 1099a0683 |
| 12 | 657b5200 |
| 13 | 39075b10 |
| 14 | 22b27744 |
| 15 | 1555aee6 |
| hex | dd281e0 |
231899616 has 144 divisors (see below), whose sum is σ = 741345696. Its totient is φ = 68226048.
The previous prime is 231899537. The next prime is 231899621. The reversal of 231899616 is 616998132.
It is a happy number.
231899616 is a `hidden beast` number, since 23 + 1 + 8 + 9 + 9 + 616 = 666.
It is a tau number, because it is divible by the number of its divisors (144).
It is a super-4 number, since 4×2318996164 (a number of 35 digits) contains 4444 as substring.
It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.
It is a nude number because it is divisible by every one of its digits.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84766 + ... + 87458.
It is an arithmetic number, because the mean of its divisors is an integer number (5148234).
Almost surely, 2231899616 is an apocalyptic number.
231899616 is a gapful number since it is divisible by the number (26) 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 231899616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370672848).
231899616 is an abundant number, since it is smaller than the sum of its proper divisors (509446080).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
231899616 is a wasteful number, since it uses less digits than its factorization.
231899616 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2745 (or 2734 counting only the distinct ones).
The product of its digits is 139968, while the sum is 45.
The square root of 231899616 is about 15228.2505889547. The cubic root of 231899616 is about 614.3747283713.
The spelling of 231899616 in words is "two hundred thirty-one million, eight hundred ninety-nine thousand, six hundred sixteen".
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