3131221333130 has 64 divisors (see below), whose sum is σ = 6227199648000. Its totient is φ = 1124106001920.

The previous prime is 3131221333109. The next prime is 3131221333169. The reversal of 3131221333130 is 313331221313.

It is a self number, because there is not a number n which added to its sum of digits gives 3131221333130.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6147971 + ... + 6637769.

It is an arithmetic number, because the mean of its divisors is an integer number (97299994500).

Almost surely, 2^{3131221333130} is an apocalyptic number.

3131221333130 is a deficient number, since it is larger than the sum of its proper divisors (3095978314870).

3131221333130 is a wasteful number, since it uses less digits than its factorization.

3131221333130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490559.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 3131221333130 its reverse (313331221313), we get a palindrome (3444552554443).

The spelling of 3131221333130 in words is "three trillion, one hundred thirty-one billion, two hundred twenty-one million, three hundred thirty-three thousand, one hundred thirty".