31200013300421 has 16 divisors (see below), whose sum is σ = 35680163491200. Its totient is φ = 26725615962048.

The previous prime is 31200013300397. The next prime is 31200013300507. The reversal of 31200013300421 is 12400331000213.

It is a cyclic number.

It is not a de Polignac number, because 31200013300421 - 2⁴² = 26801966789317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31200013300393 and 31200013300402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200013300721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329752106 + ... + 329846708.

It is an arithmetic number, because the mean of its divisors is an integer number (2230010218200).

Almost surely, 2^{31200013300421} is an apocalyptic number.

It is an amenable number.

31200013300421 is a deficient number, since it is larger than the sum of its proper divisors (4480150190779).

31200013300421 is a wasteful number, since it uses less digits than its factorization.

31200013300421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124508.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31200013300421 its reverse (12400331000213), we get a palindrome (43600344300634).

The spelling of 31200013300421 in words is "thirty-one trillion, two hundred billion, thirteen million, three hundred thousand, four hundred twenty-one".