157237631 has 2 divisors, whose sum is σ = 157237632. Its totient is φ = 157237630.

The previous prime is 157237609. The next prime is 157237649. The reversal of 157237631 is 136732751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157237631 - 2¹⁴ = 157221247 is a prime.

It is a super-2 number, since 2×157237631² = 49447345204984322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 157237591 and 157237600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157237651) 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, 78618815 + 78618816.

It is an arithmetic number, because the mean of its divisors is an integer number (78618816).

Almost surely, 2^157237631 is an apocalyptic number.

157237631 is a deficient number, since it is larger than the sum of its proper divisors (1).

157237631 is an equidigital number, since it uses as much as digits as its factorization.

157237631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 35.

The square root of 157237631 is about 12539.4430099586. The cubic root of 157237631 is about 539.7411093254.

The spelling of 157237631 in words is "one hundred fifty-seven million, two hundred thirty-seven thousand, six hundred thirty-one".