31200013300420 has 48 divisors (see below), whose sum is σ = 69011530156800. Its totient is φ = 11815777843200.

The previous prime is 31200013300397. The next prime is 31200013300507. The reversal of 31200013300420 is 2400331000213.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25033500 + ... + 26250259.

It is an arithmetic number, because the mean of its divisors is an integer number (1437740211600).

Almost surely, 2^{31200013300420} is an apocalyptic number.

It is an amenable number.

31200013300420 is an abundant number, since it is smaller than the sum of its proper divisors (37811516856380).

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

31200013300420 is a wasteful number, since it uses less digits than its factorization.

31200013300420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51285388 (or 51285386 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31200013300420 its reverse (2400331000213), we get a palindrome (33600344300633).

The spelling of 31200013300420 in words is "thirty-one trillion, two hundred billion, thirteen million, three hundred thousand, four hundred twenty".