156001013 has 4 divisors (see below), whose sum is σ = 178286880. Its totient is φ = 133715148.

The previous prime is 156001003. The next prime is 156001031. The reversal of 156001013 is 310100651.

156001013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 156001013 - 2⁴ = 156000997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156000982 and 156001000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156001003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11142923 + ... + 11142936.

It is an arithmetic number, because the mean of its divisors is an integer number (44571720).

Almost surely, 2^156001013 is an apocalyptic number.

It is an amenable number.

156001013 is a deficient number, since it is larger than the sum of its proper divisors (22285867).

156001013 is an equidigital number, since it uses as much as digits as its factorization.

156001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22285866.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 156001013 is about 12490.0365491859. The cubic root of 156001013 is about 538.3224264187.

Adding to 156001013 its reverse (310100651), we get a palindrome (466101664).

The spelling of 156001013 in words is "one hundred fifty-six million, one thousand, thirteen".