31232002122 has 24 divisors (see below), whose sum is σ = 67882818276. Its totient is φ = 10377824256.

The previous prime is 31232002117. The next prime is 31232002129. The reversal of 31232002122 is 22120023213.

It can be written as a sum of positive squares in 2 ways, for example, as 31103202321 + 128799801 = 176361^2 + 11349^2 .

It is a super-2 number, since 2×31232002122² (a number of 22 digits) contains 22 as substring.

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 = 31232002095 and 31232002104.

It is not an unprimeable number, because it can be changed into a prime (31232002129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2731063 + ... + 2742474.

Almost surely, 2^31232002122 is an apocalyptic number.

31232002122 is an abundant number, since it is smaller than the sum of its proper divisors (36650816154).

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

31232002122 is a wasteful number, since it uses less digits than its factorization.

31232002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473862 (or 5473859 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31232002122 its reverse (22120023213), we get a palindrome (53352025335).

The spelling of 31232002122 in words is "thirty-one billion, two hundred thirty-two million, two thousand, one hundred twenty-two".