31031320133022 has 48 divisors (see below), whose sum is σ = 68258537899776. Its totient is φ = 9397789046800.

The previous prime is 31031320132963. The next prime is 31031320133057. The reversal of 31031320133022 is 22033102313013.

It is a junction number, because it is equal to n+sod(n) for n = 31031320132983 and 31031320133001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11610054 + ... + 14030537.

It is an arithmetic number, because the mean of its divisors is an integer number (1422052872912).

Almost surely, 2^{31031320133022} is an apocalyptic number.

31031320133022 is an abundant number, since it is smaller than the sum of its proper divisors (37227217766754).

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

31031320133022 is a wasteful number, since it uses less digits than its factorization.

31031320133022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25642285 (or 25642274 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31031320133022 its reverse (22033102313013), we get a palindrome (53064422446035).

The spelling of 31031320133022 in words is "thirty-one trillion, thirty-one billion, three hundred twenty million, one hundred thirty-three thousand, twenty-two".