31220122433120 has 24 divisors (see below), whose sum is σ = 73757539248624. Its totient is φ = 12488048973184.

The previous prime is 31220122433117. The next prime is 31220122433189. The reversal of 31220122433120 is 2133422102213.

It is a self number, because there is not a number n which added to its sum of digits gives 31220122433120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97562882444 + ... + 97562882763.

It is an arithmetic number, because the mean of its divisors is an integer number (3073230802026).

Almost surely, 2^{31220122433120} is an apocalyptic number.

It is an amenable number.

31220122433120 is an abundant number, since it is smaller than the sum of its proper divisors (42537416815504).

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

31220122433120 is a wasteful number, since it uses less digits than its factorization.

31220122433120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195125765222 (or 195125765214 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31220122433120 its reverse (2133422102213), we get a palindrome (33353544535333).

The spelling of 31220122433120 in words is "thirty-one trillion, two hundred twenty billion, one hundred twenty-two million, four hundred thirty-three thousand, one hundred twenty".