31033122012 has 72 divisors (see below), whose sum is σ = 82503308160. Its totient is φ = 9821784960.

The previous prime is 31033122011. The next prime is 31033122017. The reversal of 31033122012 is 21022133013.

31033122012 is a `hidden beast` number, since 310 + 331 + 2 + 20 + 1 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31033122011) 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 23 ways as a sum of consecutive naturals, for example, 203187 + ... + 321482.

It is an arithmetic number, because the mean of its divisors is an integer number (1145879280).

Almost surely, 2^31033122012 is an apocalyptic number.

It is an amenable number.

31033122012 is an abundant number, since it is smaller than the sum of its proper divisors (51470186148).

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

31033122012 is a wasteful number, since it uses less digits than its factorization.

31033122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524763 (or 524758 counting only the distinct ones).

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

Adding to 31033122012 its reverse (21022133013), we get a palindrome (52055255025).

The spelling of 31033122012 in words is "thirty-one billion, thirty-three million, one hundred twenty-two thousand, twelve".