31220555122 has 8 divisors (see below), whose sum is σ = 46965019500. Its totient is φ = 15565548624.

The previous prime is 31220555117. The next prime is 31220555137. The reversal of 31220555122 is 22155502213.

It can be written as a sum of positive squares in 2 ways, for example, as 29487414961 + 1733140161 = 171719^2 + 41631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 22363597 + ... + 22364992.

Almost surely, 2^31220555122 is an apocalyptic number.

31220555122 is a deficient number, since it is larger than the sum of its proper divisors (15744464378).

31220555122 is a wasteful number, since it uses less digits than its factorization.

31220555122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44728940.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 31220555122 in words is "thirty-one billion, two hundred twenty million, five hundred fifty-five thousand, one hundred twenty-two".