31330219990 has 16 divisors (see below), whose sum is σ = 57073848048. Its totient is φ = 12381098656.

The previous prime is 31330219939. The next prime is 31330220027. The reversal of 31330219990 is 9991203313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18872797 + ... + 18874456.

It is an arithmetic number, because the mean of its divisors is an integer number (3567115503).

Almost surely, 2^31330219990 is an apocalyptic number.

31330219990 is a deficient number, since it is larger than the sum of its proper divisors (25743628058).

31330219990 is a wasteful number, since it uses less digits than its factorization.

31330219990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37747343.

The product of its (nonzero) digits is 39366, while the sum is 40.

The spelling of 31330219990 in words is "thirty-one billion, three hundred thirty million, two hundred nineteen thousand, nine hundred ninety".