31220333122 has 12 divisors (see below), whose sum is σ = 51474847158. Its totient is φ = 14191060400.

The previous prime is 31220333093. The next prime is 31220333143. The reversal of 31220333122 is 22133302213.

It can be written as a sum of positive squares in only one way, i.e., 30279132081 + 941201041 = 174009^2 + 30679^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31220333093 and 31220333102.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64504579 + ... + 64505062.

Almost surely, 2^31220333122 is an apocalyptic number.

31220333122 is a deficient number, since it is larger than the sum of its proper divisors (20254514036).

31220333122 is a wasteful number, since it uses less digits than its factorization.

31220333122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129009665 (or 129009654 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31220333122 its reverse (22133302213), we get a palindrome (53353635335).

The spelling of 31220333122 in words is "thirty-one billion, two hundred twenty million, three hundred thirty-three thousand, one hundred twenty-two".