31304111430220 has 12 divisors (see below), whose sum is σ = 65738634003504. Its totient is φ = 12521644572080.

The previous prime is 31304111430211. The next prime is 31304111430233. The reversal of 31304111430220 is 2203411140313.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782602785736 + ... + 782602785775.

It is an arithmetic number, because the mean of its divisors is an integer number (5478219500292).

Almost surely, 2^{31304111430220} is an apocalyptic number.

It is an amenable number.

31304111430220 is an abundant number, since it is smaller than the sum of its proper divisors (34434522573284).

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

31304111430220 is a wasteful number, since it uses less digits than its factorization.

31304111430220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565205571520 (or 1565205571518 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31304111430220 its reverse (2203411140313), we get a palindrome (33507522570533).

The spelling of 31304111430220 in words is "thirty-one trillion, three hundred four billion, one hundred eleven million, four hundred thirty thousand, two hundred twenty".