31106623712 has 24 divisors (see below), whose sum is σ = 61264946736. Its totient is φ = 15547272192.

The previous prime is 31106623697. The next prime is 31106623739. The reversal of 31106623712 is 21732660113.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104468 + ... + 270419.

It is an arithmetic number, because the mean of its divisors is an integer number (2552706114).

Almost surely, 2^31106623712 is an apocalyptic number.

31106623712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31106623712 is a deficient number, since it is larger than the sum of its proper divisors (30158323024).

31106623712 is a wasteful number, since it uses less digits than its factorization.

31106623712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377490 (or 377482 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 31106623712 in words is "thirty-one billion, one hundred six million, six hundred twenty-three thousand, seven hundred twelve".