31222132004 has 12 divisors (see below), whose sum is σ = 62444264064. Its totient is φ = 13380913704.

The previous prime is 31222132001. The next prime is 31222132021. The reversal of 31222132004 is 40023122213.

31222132004 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (31222132001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557538044 + ... + 557538099.

It is an arithmetic number, because the mean of its divisors is an integer number (5203688672).

Almost surely, 2^31222132004 is an apocalyptic number.

It is an amenable number.

31222132004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31222132004 is a wasteful number, since it uses less digits than its factorization.

31222132004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115076154 (or 1115076152 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31222132004 its reverse (40023122213), we get a palindrome (71245254217).

The spelling of 31222132004 in words is "thirty-one billion, two hundred twenty-two million, one hundred thirty-two thousand, four".