157107231 has 12 divisors (see below), whose sum is σ = 228380152. Its totient is φ = 104070096.

The previous prime is 157107193. The next prime is 157107253. The reversal of 157107231 is 132701751.

It is a happy number.

157107231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157107231 - 2⁷ = 157107103 is a prime.

It is a super-3 number, since 3×157107231³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157107195 and 157107204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157107281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54181 + ... + 57006.

Almost surely, 2^157107231 is an apocalyptic number.

157107231 is a deficient number, since it is larger than the sum of its proper divisors (71272921).

157107231 is a wasteful number, since it uses less digits than its factorization.

157107231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111350 (or 111347 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 157107231 is about 12534.2423384902. The cubic root of 157107231 is about 539.5918623850.

Adding to 157107231 its reverse (132701751), we get a palindrome (289808982).

The spelling of 157107231 in words is "one hundred fifty-seven million, one hundred seven thousand, two hundred thirty-one".