31113011000 has 32 divisors (see below), whose sum is σ = 72804448080. Its totient is φ = 12445204000.

The previous prime is 31113010997. The next prime is 31113011009. The reversal of 31113011000 is 11031113.

It is a happy number.

It is a super-2 number, since 2×31113011000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113011009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15555506 + ... + 15557505.

Almost surely, 2^31113011000 is an apocalyptic number.

It is an amenable number.

31113011000 is an abundant number, since it is smaller than the sum of its proper divisors (41691437080).

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

31113011000 is a wasteful number, since it uses less digits than its factorization.

31113011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31113032 (or 31113018 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 11.

Adding to 31113011000 its reverse (11031113), we get a palindrome (31124042113).

The spelling of 31113011000 in words is "thirty-one billion, one hundred thirteen million, eleven thousand".