31213230012300 has 72 divisors (see below), whose sum is σ = 103211747247616. Its totient is φ = 7134452573760.

The previous prime is 31213230012281. The next prime is 31213230012379. The reversal of 31213230012300 is 321003231213.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7431719332 + ... + 7431723531.

Almost surely, 2^{31213230012300} is an apocalyptic number.

31213230012300 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31213230012300 is an abundant number, since it is smaller than the sum of its proper divisors (71998517235316).

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

31213230012300 is a wasteful number, since it uses less digits than its factorization.

31213230012300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14863442887 (or 14863442880 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31213230012300 its reverse (321003231213), we get a palindrome (31534233243513).

The spelling of 31213230012300 in words is "thirty-one trillion, two hundred thirteen billion, two hundred thirty million, twelve thousand, three hundred".