31213001113300 has 72 divisors (see below), whose sum is σ = 67958318109752. Its totient is φ = 12443590656000.

The previous prime is 31213001113267. The next prime is 31213001113309. The reversal of 31213001113300 is 331110031213.

It can be written as a sum of positive squares in 12 ways, for example, as 5380117362064 + 25832883751236 = 2319508^2 + 5082606^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213001113309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35980660 + ... + 36837940.

Almost surely, 2^{31213001113300} is an apocalyptic number.

It is an amenable number.

31213001113300 is an abundant number, since it is smaller than the sum of its proper divisors (36745316996452).

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

31213001113300 is a wasteful number, since it uses less digits than its factorization.

31213001113300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858509 (or 858502 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31213001113300 its reverse (331110031213), we get a palindrome (31544111144513).

The spelling of 31213001113300 in words is "thirty-one trillion, two hundred thirteen billion, one million, one hundred thirteen thousand, three hundred".