3131133101220 has 48 divisors (see below), whose sum is σ = 8793659665728. Its totient is φ = 832446257280.

The previous prime is 3131133101149. The next prime is 3131133101233. The reversal of 3131133101220 is 221013311313.

It is a happy 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, 78810279 + ... + 78849998.

It is an arithmetic number, because the mean of its divisors is an integer number (183201243036).

Almost surely, 2^{3131133101220} is an apocalyptic number.

3131133101220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3131133101220 is an abundant number, since it is smaller than the sum of its proper divisors (5662526564508).

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

3131133101220 is a wasteful number, since it uses less digits than its factorization.

3131133101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157660620 (or 157660618 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 3131133101220 its reverse (221013311313), we get a palindrome (3352146412533).

The spelling of 3131133101220 in words is "three trillion, one hundred thirty-one billion, one hundred thirty-three million, one hundred one thousand, two hundred twenty".