31004040022 has 32 divisors (see below), whose sum is σ = 48378746880. Its totient is φ = 14891701440.

The previous prime is 31004040019. The next prime is 31004040061. The reversal of 31004040022 is 22004040013.

It is a super-2 number, since 2×31004040022² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31004039978 and 31004040005.

It is a congruent 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, 1760979 + ... + 1778497.

It is an arithmetic number, because the mean of its divisors is an integer number (1511835840).

Almost surely, 2^31004040022 is an apocalyptic number.

31004040022 is a deficient number, since it is larger than the sum of its proper divisors (17374706858).

31004040022 is a wasteful number, since it uses less digits than its factorization.

31004040022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17916.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 31004040022 its reverse (22004040013), we get a palindrome (53008080035).

Subtracting from 31004040022 its reverse (22004040013), we obtain a palindrome (9000000009).

The spelling of 31004040022 in words is "thirty-one billion, four million, forty thousand, twenty-two".