31222429980 has 96 divisors (see below), whose sum is σ = 101034501120. Its totient is φ = 7056360960.

The previous prime is 31222429961. The next prime is 31222430039. The reversal of 31222429980 is 8992422213.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 380256 + ... + 455015.

It is an arithmetic number, because the mean of its divisors is an integer number (1052442720).

Almost surely, 2^31222429980 is an apocalyptic number.

31222429980 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31222429980 is an abundant number, since it is smaller than the sum of its proper divisors (69812071140).

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

31222429980 is a wasteful number, since it uses less digits than its factorization.

31222429980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835379 (or 835377 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 31222429980 in words is "thirty-one billion, two hundred twenty-two million, four hundred twenty-nine thousand, nine hundred eighty".