3131323223100 has 72 divisors (see below), whose sum is σ = 9062431686000. Its totient is φ = 834791892480.

The previous prime is 3131323223069. The next prime is 3131323223101. The reversal of 3131323223100 is 13223231313.

It is a super-2 number, since 2×3131323223100² (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 (3131323223101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318975 + ... + 2522774.

It is an arithmetic number, because the mean of its divisors is an integer number (125867106750).

Almost surely, 2^{3131323223100} is an apocalyptic number.

3131323223100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3131323223100 is an abundant number, since it is smaller than the sum of its proper divisors (5931108462900).

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

3131323223100 is a wasteful number, since it uses less digits than its factorization.

3131323223100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845439 (or 2845432 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 3131323223100 its reverse (13223231313), we get a palindrome (3144546454413).

The spelling of 3131323223100 in words is "three trillion, one hundred thirty-one billion, three hundred twenty-three million, two hundred twenty-three thousand, one hundred".