31000122042 has 64 divisors (see below), whose sum is σ = 64067863680. Its totient is φ = 9995673600.

The previous prime is 31000122037. The next prime is 31000122067. The reversal of 31000122042 is 24022100013.

It is a super-2 number, since 2×31000122042² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6284317 + ... + 6289247.

It is an arithmetic number, because the mean of its divisors is an integer number (1001060370).

Almost surely, 2^31000122042 is an apocalyptic number.

31000122042 is an abundant number, since it is smaller than the sum of its proper divisors (33067741638).

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

31000122042 is a wasteful number, since it uses less digits than its factorization.

31000122042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5279.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 31000122042 its reverse (24022100013), we get a palindrome (55022222055).

The spelling of 31000122042 in words is "thirty-one billion, one hundred twenty-two thousand, forty-two".