31320224313 has 48 divisors (see below), whose sum is σ = 49238066304. Its totient is φ = 17347115520.

The previous prime is 31320224311. The next prime is 31320224333. The reversal of 31320224313 is 31342202313.

It is not a de Polignac number, because 31320224313 - 2¹ = 31320224311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31320224311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8076531 + ... + 8080407.

It is an arithmetic number, because the mean of its divisors is an integer number (1025793048).

Almost surely, 2^31320224313 is an apocalyptic number.

It is an amenable number.

31320224313 is a deficient number, since it is larger than the sum of its proper divisors (17917841991).

31320224313 is a wasteful number, since it uses less digits than its factorization.

31320224313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4242 (or 4205 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31320224313 its reverse (31342202313), we get a palindrome (62662426626).

The spelling of 31320224313 in words is "thirty-one billion, three hundred twenty million, two hundred twenty-four thousand, three hundred thirteen".