157696831 has 2 divisors, whose sum is σ = 157696832. Its totient is φ = 157696830.

The previous prime is 157696829. The next prime is 157696843. The reversal of 157696831 is 138696751.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157696831 - 2¹ = 157696829 is a prime.

It is a super-2 number, since 2×157696831² = 49736581014885122, which contains 22 as substring.

Together with 157696829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157696871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78848415 + 78848416.

It is an arithmetic number, because the mean of its divisors is an integer number (78848416).

Almost surely, 2^157696831 is an apocalyptic number.

157696831 is a deficient number, since it is larger than the sum of its proper divisors (1).

157696831 is an equidigital number, since it uses as much as digits as its factorization.

157696831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 157696831 is about 12557.7398842308. The cubic root of 157696831 is about 540.2660223333.

The spelling of 157696831 in words is "one hundred fifty-seven million, six hundred ninety-six thousand, eight hundred thirty-one".