31333120013212 has 24 divisors (see below), whose sum is σ = 55176622956000. Its totient is φ = 15568565227776.

The previous prime is 31333120013189. The next prime is 31333120013231. The reversal of 31333120013212 is 21231002133313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23684353 + ... + 24972280.

It is an arithmetic number, because the mean of its divisors is an integer number (2299025956500).

Almost surely, 2^{31333120013212} is an apocalyptic number.

It is an amenable number.

31333120013212 is a deficient number, since it is larger than the sum of its proper divisors (23843502942788).

31333120013212 is a wasteful number, since it uses less digits than its factorization.

31333120013212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48657645 (or 48657643 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31333120013212 its reverse (21231002133313), we get a palindrome (52564122146525).

The spelling of 31333120013212 in words is "thirty-one trillion, three hundred thirty-three billion, one hundred twenty million, thirteen thousand, two hundred twelve".