20113131232 has 48 divisors (see below), whose sum is σ = 40027163904. Its totient is φ = 9948096000.

The previous prime is 20113131187. The next prime is 20113131301. The reversal of 20113131232 is 23213131102.

It is a congruent number.

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, 1097182 + ... + 1115362.

It is an arithmetic number, because the mean of its divisors is an integer number (833899248).

Almost surely, 2^20113131232 is an apocalyptic number.

It is an amenable number.

20113131232 is a deficient number, since it is larger than the sum of its proper divisors (19914032672).

20113131232 is a wasteful number, since it uses less digits than its factorization.

20113131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18563 (or 18555 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20113131232 its reverse (23213131102), we get a palindrome (43326262334).

The spelling of 20113131232 in words is "twenty billion, one hundred thirteen million, one hundred thirty-one thousand, two hundred thirty-two".