156131361 has 8 divisors (see below), whose sum is σ = 231305760. Its totient is φ = 104087556.

The previous prime is 156131351. The next prime is 156131369. The reversal of 156131361 is 163131651.

156131361 is a `hidden beast` number, since 15 + 613 + 1 + 36 + 1 = 666.

It is not a de Polignac number, because 156131361 - 2⁵ = 156131329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5782643 = 156131361 / (1 + 5 + 6 + 1 + 3 + 1 + 3 + 6 + 1).

It is not an unprimeable number, because it can be changed into a prime (156131369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2891295 + ... + 2891348.

It is an arithmetic number, because the mean of its divisors is an integer number (28913220).

Almost surely, 2^156131361 is an apocalyptic number.

It is an amenable number.

156131361 is a deficient number, since it is larger than the sum of its proper divisors (75174399).

156131361 is an equidigital number, since it uses as much as digits as its factorization.

156131361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782652 (or 5782646 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 156131361 is about 12495.2535388443. The cubic root of 156131361 is about 538.4723180035.

The spelling of 156131361 in words is "one hundred fifty-six million, one hundred thirty-one thousand, three hundred sixty-one".