31012013113012 has 24 divisors (see below), whose sum is σ = 55595178906120. Its totient is φ = 15127682711040.

The previous prime is 31012013113001. The next prime is 31012013113019. The reversal of 31012013113012 is 21031131021013.

It can be written as a sum of positive squares in 4 ways, for example, as 496509073956 + 30515504039056 = 704634^2 + 5524084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012013113019) 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, 20225664 + ... + 21704872.

It is an arithmetic number, because the mean of its divisors is an integer number (2316465787755).

Almost surely, 2^{31012013113012} is an apocalyptic number.

It is an amenable number.

31012013113012 is a deficient number, since it is larger than the sum of its proper divisors (24583165793108).

31012013113012 is a wasteful number, since it uses less digits than its factorization.

31012013113012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607091 (or 1607089 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31012013113012 its reverse (21031131021013), we get a palindrome (52043144134025).

The spelling of 31012013113012 in words is "thirty-one trillion, twelve billion, thirteen million, one hundred thirteen thousand, twelve".