156240131 has 8 divisors (see below), whose sum is σ = 160834464. Its totient is φ = 151706880.

The previous prime is 156240121. The next prime is 156240169. The reversal of 156240131 is 131042651.

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

It is a cyclic number.

It is not a de Polignac number, because 156240131 - 2¹⁰ = 156239107 is a prime.

It is a super-2 number, since 2×156240131² = 48821957069794322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156240097 and 156240106.

It is not an unprimeable number, because it can be changed into a prime (156240121) 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, 10055 + ... + 20336.

It is an arithmetic number, because the mean of its divisors is an integer number (20104308).

Almost surely, 2^156240131 is an apocalyptic number.

156240131 is a deficient number, since it is larger than the sum of its proper divisors (4594333).

156240131 is an equidigital number, since it uses as much as digits as its factorization.

156240131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30541.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 156240131 is about 12499.6052337664. The cubic root of 156240131 is about 538.5973324740.

Adding to 156240131 its reverse (131042651), we get a palindrome (287282782).

The spelling of 156240131 in words is "one hundred fifty-six million, two hundred forty thousand, one hundred thirty-one".