31506134112 has 96 divisors (see below), whose sum is σ = 91933601760. Its totient is φ = 10497392640.

The previous prime is 31506134089. The next prime is 31506134147. The reversal of 31506134112 is 21143160513.

It is a happy number.

31506134112 is a `hidden beast` number, since 3 + 1 + 5 + 0 + 613 + 41 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 2337312 + ... + 2350752.

It is an arithmetic number, because the mean of its divisors is an integer number (957641685).

Almost surely, 2^31506134112 is an apocalyptic number.

31506134112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31506134112 is an abundant number, since it is smaller than the sum of its proper divisors (60427467648).

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

31506134112 is a wasteful number, since it uses less digits than its factorization.

31506134112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16173 (or 16159 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 31506134112 its reverse (21143160513), we get a palindrome (52649294625).

The spelling of 31506134112 in words is "thirty-one billion, five hundred six million, one hundred thirty-four thousand, one hundred twelve".