2131973188 has 12 divisors (see below), whose sum is σ = 3731564032. Its totient is φ = 1065812040.

The previous prime is 2131973141. The next prime is 2131973197. The reversal of 2131973188 is 8813791312.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13908 + ... + 66763.

Almost surely, 2^2131973188 is an apocalyptic number.

It is an amenable number.

2131973188 is a deficient number, since it is larger than the sum of its proper divisors (1599590844).

2131973188 is a wasteful number, since it uses less digits than its factorization.

2131973188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87282 (or 87280 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 2131973188 is about 46173.2951823887. The cubic root of 2131973188 is about 1287.0455367521.

The spelling of 2131973188 in words is "two billion, one hundred thirty-one million, nine hundred seventy-three thousand, one hundred eighty-eight".