31304032232013 has 24 divisors (see below), whose sum is σ = 46602658502400. Its totient is φ = 20237937653664.

The previous prime is 31304032231999. The next prime is 31304032232059. The reversal of 31304032232013 is 31023223040313.

31304032232013 is a `hidden beast` number, since 3 + 1 + 3 + 0 + 4 + 0 + 322 + 320 + 13 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-31304032232013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304032222013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339425473 + ... + 339517686.

It is an arithmetic number, because the mean of its divisors is an integer number (1941777437600).

Almost surely, 2^{31304032232013} is an apocalyptic number.

It is an amenable number.

31304032232013 is a deficient number, since it is larger than the sum of its proper divisors (15298626270387).

31304032232013 is a wasteful number, since it uses less digits than its factorization.

31304032232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678943321 (or 678943318 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 31304032232013 its reverse (31023223040313), we get a palindrome (62327255272326).

The spelling of 31304032232013 in words is "thirty-one trillion, three hundred four billion, thirty-two million, two hundred thirty-two thousand, thirteen".