3131222330320 has 80 divisors (see below), whose sum is σ = 8758005344640. Its totient is φ = 1017058678272.

The previous prime is 3131222330317. The next prime is 3131222330329. The reversal of 3131222330320 is 230332221313.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×3131222330320² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131222330329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147133267 + ... + 147154546.

It is an arithmetic number, because the mean of its divisors is an integer number (109475066808).

Almost surely, 2^{3131222330320} is an apocalyptic number.

It is an amenable number.

3131222330320 is an abundant number, since it is smaller than the sum of its proper divisors (5626783014320).

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

3131222330320 is a wasteful number, since it uses less digits than its factorization.

3131222330320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294287852 (or 294287846 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 3131222330320 its reverse (230332221313), we get a palindrome (3361554551633).

The spelling of 3131222330320 in words is "three trillion, one hundred thirty-one billion, two hundred twenty-two million, three hundred thirty thousand, three hundred twenty".