31013201321 has 8 divisors (see below), whose sum is σ = 31427784864. Its totient is φ = 30600928000.

The previous prime is 31013201293. The next prime is 31013201333. The reversal of 31013201321 is 12310231013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31013201321 - 2²² = 31009007017 is a prime.

It is a super-2 number, since 2×31013201321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31013201321.

It is not an unprimeable number, because it can be changed into a prime (31013201341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550520 + ... + 604233.

It is an arithmetic number, because the mean of its divisors is an integer number (3928473108).

Almost surely, 2^31013201321 is an apocalyptic number.

It is an amenable number.

31013201321 is a deficient number, since it is larger than the sum of its proper divisors (414583543).

31013201321 is a wasteful number, since it uses less digits than its factorization.

31013201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155111.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31013201321 its reverse (12310231013), we get a palindrome (43323432334).

The spelling of 31013201321 in words is "thirty-one billion, thirteen million, two hundred one thousand, three hundred twenty-one".