31372143500 has 24 divisors (see below), whose sum is σ = 68516762496. Its totient is φ = 12548857200.

The previous prime is 31372143401. The next prime is 31372143503. The reversal of 31372143500 is 534127313.

It is a super-2 number, since 2×31372143500² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31372143503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31371644 + ... + 31372643.

It is an arithmetic number, because the mean of its divisors is an integer number (2854865104).

Almost surely, 2^31372143500 is an apocalyptic number.

It is an amenable number.

31372143500 is an abundant number, since it is smaller than the sum of its proper divisors (37144618996).

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

31372143500 is a wasteful number, since it uses less digits than its factorization.

31372143500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62744306 (or 62744294 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The spelling of 31372143500 in words is "thirty-one billion, three hundred seventy-two million, one hundred forty-three thousand, five hundred".