31332012 has 12 divisors (see below), whose sum is σ = 73108056. Its totient is φ = 10444000.

The previous prime is 31332011. The next prime is 31332029. The reversal of 31332012 is 21023313.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 31331982 and 31332000.

It is not an unprimeable number, because it can be changed into a prime (31332011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1305489 + ... + 1305512.

It is an arithmetic number, because the mean of its divisors is an integer number (6092338).

Almost surely, 2^31332012 is an apocalyptic number.

It is an amenable number.

31332012 is an abundant number, since it is smaller than the sum of its proper divisors (41776044).

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

31332012 is a wasteful number, since it uses less digits than its factorization.

31332012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611008 (or 2611006 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 31332012 is about 5597.5005136221. The cubic root of 31332012 is about 315.2555648347.

Adding to 31332012 its reverse (21023313), we get a palindrome (52355325).

The spelling of 31332012 in words is "thirty-one million, three hundred thirty-two thousand, twelve".