31122122104 has 16 divisors (see below), whose sum is σ = 58889338200. Its totient is φ = 15418298592.

The previous prime is 31122122093. The next prime is 31122122107. The reversal of 31122122104 is 40122122113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122122107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17844382 + ... + 17846125.

Almost surely, 2^31122122104 is an apocalyptic number.

It is an amenable number.

31122122104 is a deficient number, since it is larger than the sum of its proper divisors (27767216096).

31122122104 is a wasteful number, since it uses less digits than its factorization.

31122122104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35690622 (or 35690618 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 31122122104 its reverse (40122122113), we get a palindrome (71244244217).

Subtracting 31122122104 from its reverse (40122122113), we obtain a palindrome (9000000009).

The spelling of 31122122104 in words is "thirty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred four".