70131988 has 12 divisors (see below), whose sum is σ = 122809792. Its totient is φ = 35043480.

The previous prime is 70131977. The next prime is 70132003. The reversal of 70131988 is 88913107.

It is a congruent number.

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, 2773 + ... + 12163.

Almost surely, 2^70131988 is an apocalyptic number.

It is an amenable number.

70131988 is a deficient number, since it is larger than the sum of its proper divisors (52677804).

70131988 is a wasteful number, since it uses less digits than its factorization.

70131988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11262 (or 11260 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 70131988 is about 8374.4843423342. The cubic root of 70131988 is about 412.3873960166.

The spelling of 70131988 in words is "seventy million, one hundred thirty-one thousand, nine hundred eighty-eight".