31013222103220 has 48 divisors (see below), whose sum is σ = 74432049366528. Its totient is φ = 10633059532800.

The previous prime is 31013222103217. The next prime is 31013222103287. The reversal of 31013222103220 is 2230122231013.

It is a junction number, because it is equal to n+sod(n) for n = 31013222103191 and 31013222103200.

It is a congruent number.

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, 64703445 + ... + 65180995.

It is an arithmetic number, because the mean of its divisors is an integer number (1550667695136).

Almost surely, 2^{31013222103220} is an apocalyptic number.

It is an amenable number.

31013222103220 is an abundant number, since it is smaller than the sum of its proper divisors (43418827263308).

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

31013222103220 is a wasteful number, since it uses less digits than its factorization.

31013222103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941440 (or 941438 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31013222103220 its reverse (2230122231013), we get a palindrome (33243344334233).

The spelling of 31013222103220 in words is "thirty-one trillion, thirteen billion, two hundred twenty-two million, one hundred three thousand, two hundred twenty".