31313113223003 has 4 divisors (see below), whose sum is σ = 31313473483320. Its totient is φ = 31312752962688.

The previous prime is 31313113222997. The next prime is 31313113223047. The reversal of 31313113223003 is 30032231131313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31313113223003 - 2⁸ = 31313113222747 is a prime.

It is a super-2 number, since 2×31313113223003² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313113223083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179999750 + ... + 180173627.

It is an arithmetic number, because the mean of its divisors is an integer number (7828368370830).

Almost surely, 2^{31313113223003} is an apocalyptic number.

31313113223003 is a deficient number, since it is larger than the sum of its proper divisors (360260317).

31313113223003 is an equidigital number, since it uses as much as digits as its factorization.

31313113223003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360260316.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31313113223003 its reverse (30032231131313), we get a palindrome (61345344354316).

The spelling of 31313113223003 in words is "thirty-one trillion, three hundred thirteen billion, one hundred thirteen million, two hundred twenty-three thousand, three".