31373222442 has 32 divisors (see below), whose sum is σ = 64582414080. Its totient is φ = 10156086720.

The previous prime is 31373222431. The next prime is 31373222467. The reversal of 31373222442 is 24422237313.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513613 + ... + 571440.

It is an arithmetic number, because the mean of its divisors is an integer number (2018200440).

Almost surely, 2^31373222442 is an apocalyptic number.

31373222442 is an abundant number, since it is smaller than the sum of its proper divisors (33209191638).

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

31373222442 is a wasteful number, since it uses less digits than its factorization.

31373222442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085198.

The product of its digits is 48384, while the sum is 33.

Adding to 31373222442 its reverse (24422237313), we get a palindrome (55795459755).

The spelling of 31373222442 in words is "thirty-one billion, three hundred seventy-three million, two hundred twenty-two thousand, four hundred forty-two".