31028971190 has 24 divisors (see below), whose sum is σ = 64970867232. Its totient is φ = 10638504240.

The previous prime is 31028971159. The next prime is 31028971201. The reversal of 31028971190 is 9117982013.

It is a happy number.

It is a super-2 number, since 2×31028971190² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31661726 + ... + 31662705.

It is an arithmetic number, because the mean of its divisors is an integer number (2707119468).

Almost surely, 2^31028971190 is an apocalyptic number.

31028971190 is an abundant number, since it is smaller than the sum of its proper divisors (33941896042).

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

31028971190 is a wasteful number, since it uses less digits than its factorization.

31028971190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63324452 (or 63324445 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 41.

The spelling of 31028971190 in words is "thirty-one billion, twenty-eight million, nine hundred seventy-one thousand, one hundred ninety".