31120023022313 has 4 divisors (see below), whose sum is σ = 32473067501568. Its totient is φ = 29766978543060.

The previous prime is 31120023022289. The next prime is 31120023022327. The reversal of 31120023022313 is 31322032002113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31120023022313 - 2¹⁰ = 31120023021289 is a prime.

It is a super-2 number, since 2×31120023022313² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1353044479231 = 31120023022313 / (3 + 1 + 1 + 2 + 0 + 0 + 2 + 3 + 0 + 2 + 2 + 3 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31120023022213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676522239593 + ... + 676522239638.

It is an arithmetic number, because the mean of its divisors is an integer number (8118266875392).

Almost surely, 2^{31120023022313} is an apocalyptic number.

It is an amenable number.

31120023022313 is a deficient number, since it is larger than the sum of its proper divisors (1353044479255).

31120023022313 is a wasteful number, since it uses less digits than its factorization.

31120023022313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353044479254.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31120023022313 its reverse (31322032002113), we get a palindrome (62442055024426).

The spelling of 31120023022313 in words is "thirty-one trillion, one hundred twenty billion, twenty-three million, twenty-two thousand, three hundred thirteen".