157934831 has 2 divisors, whose sum is σ = 157934832. Its totient is φ = 157934830.

The previous prime is 157934809. The next prime is 157934837. The reversal of 157934831 is 138439751.

It is a strong prime.

It is an emirp because it is prime and its reverse (138439751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 157934831 - 2²² = 153740527 is a prime.

It is a super-2 number, since 2×157934831² = 49886821685997122, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_8865158 and since 157934831 and 8865158 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157934837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78967415 + 78967416.

It is an arithmetic number, because the mean of its divisors is an integer number (78967416).

Almost surely, 2^157934831 is an apocalyptic number.

157934831 is a deficient number, since it is larger than the sum of its proper divisors (1).

157934831 is an equidigital number, since it uses as much as digits as its factorization.

157934831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 157934831 is about 12567.2125389841. The cubic root of 157934831 is about 540.5376800444.

The spelling of 157934831 in words is "one hundred fifty-seven million, nine hundred thirty-four thousand, eight hundred thirty-one".