| Base | Representation |
|---|---|
| bin | 10011101111110… |
| … | …110101110001101 |
| 3 | 212002102101122022 |
| 4 | 103233312232031 |
| 5 | 1134303441023 |
| 6 | 52513055525 |
| 7 | 11132051144 |
| oct | 2357665615 |
| 9 | 762371568 |
| 10 | 331312013 |
| 11 | 16002068a |
| 12 | 92b575a5 |
| 13 | 53842016 |
| 14 | 3200475b |
| 15 | 1e1467c8 |
| hex | 13bf6b8d |
331312013 has 4 divisors (see below), whose sum is σ = 335303808. Its totient is φ = 327320220.
The previous prime is 331312001. The next prime is 331312019. The reversal of 331312013 is 310213133.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310213133 = 19 ⋅16327007.
It is a cyclic number.
It is not a de Polignac number, because 331312013 - 216 = 331246477 is a prime.
It is a super-2 number, since 2×3313120132 = 219535299916224338, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 331311982 and 331312000.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (331312019) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1995773 + ... + 1995938.
It is an arithmetic number, because the mean of its divisors is an integer number (83825952).
Almost surely, 2331312013 is an apocalyptic number.
It is an amenable number.
331312013 is a deficient number, since it is larger than the sum of its proper divisors (3991795).
331312013 is an equidigital number, since it uses as much as digits as its factorization.
331312013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3991794.
The product of its (nonzero) digits is 162, while the sum is 17.
The square root of 331312013 is about 18201.9782716055. The cubic root of 331312013 is about 691.9569266350.
Adding to 331312013 its reverse (310213133), we get a palindrome (641525146).
It can be divided in two parts, 3313120 and 13, that added together give a palindrome (3313133).
The spelling of 331312013 in words is "three hundred thirty-one million, three hundred twelve thousand, thirteen".
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