157028831 has 2 divisors, whose sum is σ = 157028832. Its totient is φ = 157028830.

The previous prime is 157028827. The next prime is 157028849. The reversal of 157028831 is 138820751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157028831 - 2² = 157028827 is a prime.

It is a super-2 number, since 2×157028831² = 49316107530453122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157028791 and 157028800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157028801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78514415 + 78514416.

It is an arithmetic number, because the mean of its divisors is an integer number (78514416).

Almost surely, 2^157028831 is an apocalyptic number.

157028831 is a deficient number, since it is larger than the sum of its proper divisors (1).

157028831 is an equidigital number, since it uses as much as digits as its factorization.

157028831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 157028831 is about 12531.1145154771. The cubic root of 157028831 is about 539.5020913401.

The spelling of 157028831 in words is "one hundred fifty-seven million, twenty-eight thousand, eight hundred thirty-one".