3131020121002 has 16 divisors (see below), whose sum is σ = 4712295892680. Its totient is φ = 1560263620608.

The previous prime is 3131020120897. The next prime is 3131020121011. The reversal of 3131020121002 is 2001210201313.

It can be written as a sum of positive squares in 4 ways, for example, as 2714193645361 + 416826475641 = 1647481^2 + 645621^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1486677 + ... + 2910712.

Almost surely, 2^{3131020121002} is an apocalyptic number.

3131020121002 is a deficient number, since it is larger than the sum of its proper divisors (1581275771678).

3131020121002 is a wasteful number, since it uses less digits than its factorization.

3131020121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398585.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 3131020121002 its reverse (2001210201313), we get a palindrome (5132230322315).

The spelling of 3131020121002 in words is "three trillion, one hundred thirty-one billion, twenty million, one hundred twenty-one thousand, two".