31132032012 has 36 divisors (see below), whose sum is σ = 79106891136. Its totient is φ = 10323010080.

The previous prime is 31132031963. The next prime is 31132032013. The reversal of 31132032012 is 21023023113.

31132032012 is a `hidden beast` number, since 3 + 11 + 320 + 320 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31132032013) by changing a digit.

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, 2256943 + ... + 2270694.

Almost surely, 2^31132032012 is an apocalyptic number.

It is an amenable number.

31132032012 is an abundant number, since it is smaller than the sum of its proper divisors (47974859124).

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

31132032012 is a wasteful number, since it uses less digits than its factorization.

31132032012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527838 (or 4527833 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31132032012 its reverse (21023023113), we get a palindrome (52155055125).

The spelling of 31132032012 in words is "thirty-one billion, one hundred thirty-two million, thirty-two thousand, twelve".