31013220012330 has 32 divisors (see below), whose sum is σ = 74608525513728. Its totient is φ = 8250547838400.

The previous prime is 31013220012289. The next prime is 31013220012347. The reversal of 31013220012330 is 3321002231013.

It is a junction number, because it is equal to n+sod(n) for n = 31013220012297 and 31013220012306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1227747466 + ... + 1227772725.

It is an arithmetic number, because the mean of its divisors is an integer number (2331516422304).

Almost surely, 2^{31013220012330} is an apocalyptic number.

31013220012330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31013220012330 is an abundant number, since it is smaller than the sum of its proper divisors (43595305501398).

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

31013220012330 is a wasteful number, since it uses less digits than its factorization.

31013220012330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455520622.

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

Adding to 31013220012330 its reverse (3321002231013), we get a palindrome (34334222243343).

The spelling of 31013220012330 in words is "thirty-one trillion, thirteen billion, two hundred twenty million, twelve thousand, three hundred thirty".