31320303323 has 12 divisors (see below), whose sum is σ = 33508343448. Its totient is φ = 29265377760.

The previous prime is 31320303319. The next prime is 31320303331. The reversal of 31320303323 is 32330302313.

It is not a de Polignac number, because 31320303323 - 2² = 31320303319 is a prime.

It is a super-2 number, since 2×31320303323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320303353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567893 + ... + 620598.

It is an arithmetic number, because the mean of its divisors is an integer number (2792361954).

Almost surely, 2^31320303323 is an apocalyptic number.

31320303323 is a deficient number, since it is larger than the sum of its proper divisors (2188040125).

31320303323 is a wasteful number, since it uses less digits than its factorization.

31320303323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188602 (or 1188583 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 23.

Adding to 31320303323 its reverse (32330302313), we get a palindrome (63650605636).

The spelling of 31320303323 in words is "thirty-one billion, three hundred twenty million, three hundred three thousand, three hundred twenty-three".