156931441 has 6 divisors (see below), whose sum is σ = 162530342. Its totient is φ = 151519200.

The previous prime is 156931429. The next prime is 156931451. The reversal of 156931441 is 144139651.

156931441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 46240000 + 110691441 = 6800^2 + 10521^2 .

It is not a de Polignac number, because 156931441 - 2⁵ = 156931409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156931397 and 156931406.

It is not an unprimeable number, because it can be changed into a prime (156931451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92460 + ... + 94141.

Almost surely, 2^156931441 is an apocalyptic number.

It is an amenable number.

156931441 is a deficient number, since it is larger than the sum of its proper divisors (5598901).

156931441 is an equidigital number, since it uses as much as digits as its factorization.

156931441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186659 (or 186630 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 156931441 is about 12527.2279854723. The cubic root of 156931441 is about 539.3905343851.

The spelling of 156931441 in words is "one hundred fifty-six million, nine hundred thirty-one thousand, four hundred forty-one".