31322421042 has 32 divisors (see below), whose sum is σ = 68512025664. Its totient is φ = 9467726400.

The previous prime is 31322421037. The next prime is 31322421079. The reversal of 31322421042 is 24012422313.

It is a happy number.

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, 571509 + ... + 623912.

It is an arithmetic number, because the mean of its divisors is an integer number (2141000802).

Almost surely, 2^31322421042 is an apocalyptic number.

31322421042 is an abundant number, since it is smaller than the sum of its proper divisors (37189604622).

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

31322421042 is a wasteful number, since it uses less digits than its factorization.

31322421042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195834.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31322421042 its reverse (24012422313), we get a palindrome (55334843355).

The spelling of 31322421042 in words is "thirty-one billion, three hundred twenty-two million, four hundred twenty-one thousand, forty-two".