31322104440 has 64 divisors (see below), whose sum is σ = 102508709760. Its totient is φ = 7593237120.

The previous prime is 31322104439. The next prime is 31322104487. The reversal of 31322104440 is 4440122313.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 31322104440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11863114 + ... + 11865753.

It is an arithmetic number, because the mean of its divisors is an integer number (1601698590).

Almost surely, 2^31322104440 is an apocalyptic number.

31322104440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31322104440 is an abundant number, since it is smaller than the sum of its proper divisors (71186605320).

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

31322104440 is a wasteful number, since it uses less digits than its factorization.

31322104440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23728892 (or 23728888 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31322104440 its reverse (4440122313), we get a palindrome (35762226753).

The spelling of 31322104440 in words is "thirty-one billion, three hundred twenty-two million, one hundred four thousand, four hundred forty".