331692313 has 2 divisors, whose sum is σ = 331692314. Its totient is φ = 331692312.

The previous prime is 331692311. The next prime is 331692331. The reversal of 331692313 is 313296133.

Together with next prime (331692331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 290770704 + 40921609 = 17052^2 + 6397^2 .

It is a cyclic number.

It is not a de Polignac number, because 331692313 - 2¹ = 331692311 is a prime.

It is a super-2 number, since 2×331692313² = 220039581006579938, which contains 22 as substring.

Together with 331692311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (331692311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165846156 + 165846157.

It is an arithmetic number, because the mean of its divisors is an integer number (165846157).

Almost surely, 2^331692313 is an apocalyptic number.

It is an amenable number.

331692313 is a deficient number, since it is larger than the sum of its proper divisors (1).

331692313 is an equidigital number, since it uses as much as digits as its factorization.

331692313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 31.

The square root of 331692313 is about 18212.4219421800. The cubic root of 331692313 is about 692.2215820918.

The spelling of 331692313 in words is "three hundred thirty-one million, six hundred ninety-two thousand, three hundred thirteen".