931912913 has 2 divisors, whose sum is σ = 931912914. Its totient is φ = 931912912.

The previous prime is 931912897. The next prime is 931913053. The reversal of 931912913 is 319219139.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 906792769 + 25120144 = 30113^2 + 5012^2 .

It is a cyclic number.

It is not a de Polignac number, because 931912913 - 2⁴ = 931912897 is a prime.

It is a super-2 number, since 2×931912913² = 1736923354832291138, which contains 22 as substring.

It is a Chen prime.

It is equal to p_47556137 and since 931912913 and 47556137 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (931915913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465956456 + 465956457.

It is an arithmetic number, because the mean of its divisors is an integer number (465956457).

Almost surely, 2^931912913 is an apocalyptic number.

It is an amenable number.

931912913 is a deficient number, since it is larger than the sum of its proper divisors (1).

931912913 is an equidigital number, since it uses as much as digits as its factorization.

931912913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 38.

The square root of 931912913 is about 30527.2486968610. The cubic root of 931912913 is about 976.7687946387.

The spelling of 931912913 in words is "nine hundred thirty-one million, nine hundred twelve thousand, nine hundred thirteen".