11947431204 has 24 divisors (see below), whose sum is σ = 30974821920. Its totient is φ = 3982477032.

The previous prime is 11947431187. The next prime is 11947431227. The reversal of 11947431204 is 40213474911.

11947431204 is a `hidden beast` number, since 1 + 19 + 4 + 7 + 431 + 204 = 666.

It is a super-2 number, since 2×11947431204² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55312074 + ... + 55312289.

It is an arithmetic number, because the mean of its divisors is an integer number (1290617580).

Almost surely, 2^11947431204 is an apocalyptic number.

It is an amenable number.

11947431204 is an abundant number, since it is smaller than the sum of its proper divisors (19027390716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11947431204 is a wasteful number, since it uses less digits than its factorization.

11947431204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110624376 (or 110624368 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 11947431204 in words is "eleven billion, nine hundred forty-seven million, four hundred thirty-one thousand, two hundred four".