2351981132 has 24 divisors (see below), whose sum is σ = 4187124480. Its totient is φ = 1155741840.

The previous prime is 2351981123. The next prime is 2351981143. The reversal of 2351981132 is 2311891532.

It is a junction number, because it is equal to n+sod(n) for n = 2351981092 and 2351981101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107657 + ... + 127647.

It is an arithmetic number, because the mean of its divisors is an integer number (174463520).

Almost surely, 2^2351981132 is an apocalyptic number.

It is an amenable number.

2351981132 is a deficient number, since it is larger than the sum of its proper divisors (1835143348).

2351981132 is a wasteful number, since it uses less digits than its factorization.

2351981132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20501 (or 20499 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 2351981132 is about 48497.2280857370. The cubic root of 2351981132 is about 1329.8763960734.

The spelling of 2351981132 in words is "two billion, three hundred fifty-one million, nine hundred eighty-one thousand, one hundred thirty-two".