31321310133112 has 32 divisors (see below), whose sum is σ = 62584671513600. Its totient is φ = 14661038781664.

The previous prime is 31321310133067. The next prime is 31321310133119. The reversal of 31321310133112 is 21133101312313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321310133119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1810890412 + ... + 1810907707.

It is an arithmetic number, because the mean of its divisors is an integer number (1955770984800).

Almost surely, 2^{31321310133112} is an apocalyptic number.

It is an amenable number.

31321310133112 is a deficient number, since it is larger than the sum of its proper divisors (31263361380488).

31321310133112 is a wasteful number, since it uses less digits than its factorization.

31321310133112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621798195 (or 3621798191 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 31321310133112 its reverse (21133101312313), we get a palindrome (52454411445425).

The spelling of 31321310133112 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred ten million, one hundred thirty-three thousand, one hundred twelve".