30131113123 has 12 divisors (see below), whose sum is σ = 32752172200. Its totient is φ = 27699178752.

The previous prime is 30131113099. The next prime is 30131113141. The reversal of 30131113123 is 32131113103.

It is not a de Polignac number, because 30131113123 - 2²⁵ = 30097558691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30131113123.

It is not an unprimeable number, because it can be changed into a prime (30131113423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1199898 + ... + 1224751.

Almost surely, 2^30131113123 is an apocalyptic number.

30131113123 is a deficient number, since it is larger than the sum of its proper divisors (2621059077).

30131113123 is a wasteful number, since it uses less digits than its factorization.

30131113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424726 (or 2424709 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 30131113123 its reverse (32131113103), we get a palindrome (62262226226).

The spelling of 30131113123 in words is "thirty billion, one hundred thirty-one million, one hundred thirteen thousand, one hundred twenty-three".