31023320313 has 8 divisors (see below), whose sum is σ = 41369709888. Its totient is φ = 20679572144.

The previous prime is 31023320297. The next prime is 31023320333. The reversal of 31023320313 is 31302332013.

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 31023320313 - 2⁴ = 31023320297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31023320313.

It is not an unprimeable number, because it can be changed into a prime (31023320333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632781 + ... + 680042.

It is an arithmetic number, because the mean of its divisors is an integer number (5171213736).

Almost surely, 2^31023320313 is an apocalyptic number.

It is an amenable number.

31023320313 is a deficient number, since it is larger than the sum of its proper divisors (10346389575).

31023320313 is a wasteful number, since it uses less digits than its factorization.

31023320313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320703.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31023320313 its reverse (31302332013), we get a palindrome (62325652326).

The spelling of 31023320313 in words is "thirty-one billion, twenty-three million, three hundred twenty thousand, three hundred thirteen".