31131301122 has 24 divisors (see below), whose sum is σ = 67456247040. Its totient is φ = 10376316600.

The previous prime is 31131301109. The next prime is 31131301169. The reversal of 31131301122 is 22110313113.

31131301122 is a `hidden beast` number, since 311 + 31 + 301 + 1 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31131301095 and 31131301104.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 211279 + ... + 326957.

It is an arithmetic number, because the mean of its divisors is an integer number (2810676960).

Almost surely, 2^31131301122 is an apocalyptic number.

31131301122 is an abundant number, since it is smaller than the sum of its proper divisors (36324945918).

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

31131301122 is a wasteful number, since it uses less digits than its factorization.

31131301122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130638 (or 130635 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31131301122 its reverse (22110313113), we get a palindrome (53241614235).

The spelling of 31131301122 in words is "thirty-one billion, one hundred thirty-one million, three hundred one thousand, one hundred twenty-two".