31222472304 has 160 divisors (see below), whose sum is σ = 88369344000. Its totient is φ = 9461394432.

The previous prime is 31222472299. The next prime is 31222472321. The reversal of 31222472304 is 40327422213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4413282 + ... + 4420350.

It is an arithmetic number, because the mean of its divisors is an integer number (552308400).

Almost surely, 2^31222472304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31222472304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44184672000).

31222472304 is an abundant number, since it is smaller than the sum of its proper divisors (57146871696).

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

31222472304 is a wasteful number, since it uses less digits than its factorization.

31222472304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7295 (or 7289 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

Adding to 31222472304 its reverse (40327422213), we get a palindrome (71549894517).

The spelling of 31222472304 in words is "thirty-one billion, two hundred twenty-two million, four hundred seventy-two thousand, three hundred four".