157145631 has 8 divisors (see below), whose sum is σ = 209776560. Its totient is φ = 104639232.

The previous prime is 157145629. The next prime is 157145663. The reversal of 157145631 is 136541751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 157145631 - 2¹ = 157145629 is a prime.

It is a super-2 number, since 2×157145631² = 49389498684776322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157145592 and 157145601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157145731) 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 in 7 ways as a sum of consecutive naturals, for example, 28146 + ... + 33263.

It is an arithmetic number, because the mean of its divisors is an integer number (26222070).

Almost surely, 2^157145631 is an apocalyptic number.

157145631 is a deficient number, since it is larger than the sum of its proper divisors (52630929).

157145631 is an equidigital number, since it uses as much as digits as its factorization.

157145631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62265.

The product of its digits is 12600, while the sum is 33.

The square root of 157145631 is about 12535.7740486976. The cubic root of 157145631 is about 539.6358209803.

The spelling of 157145631 in words is "one hundred fifty-seven million, one hundred forty-five thousand, six hundred thirty-one".