31146964890 has 32 divisors (see below), whose sum is σ = 74784681216. Its totient is φ = 8302305600.

The previous prime is 31146964883. The next prime is 31146964943. The reversal of 31146964890 is 9846964113.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150277 + ... + 291336.

It is an arithmetic number, because the mean of its divisors is an integer number (2337021288).

Almost surely, 2^31146964890 is an apocalyptic number.

31146964890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31146964890 is an abundant number, since it is smaller than the sum of its proper divisors (43637716326).

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

31146964890 is a wasteful number, since it uses less digits than its factorization.

31146964890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443974.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 31146964890 in words is "thirty-one billion, one hundred forty-six million, nine hundred sixty-four thousand, eight hundred ninety".