31313123001003 has 4 divisors (see below), whose sum is σ = 41750830668008. Its totient is φ = 20875415334000.

The previous prime is 31313123000989. The next prime is 31313123001031. The reversal of 31313123001003 is 30010032131313.

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

It is not a de Polignac number, because 31313123001003 - 2¹⁰ = 31313122999979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313123001703) 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, 5218853833498 + ... + 5218853833503.

It is an arithmetic number, because the mean of its divisors is an integer number (10437707667002).

Almost surely, 2^{31313123001003} is an apocalyptic number.

31313123001003 is a deficient number, since it is larger than the sum of its proper divisors (10437707667005).

31313123001003 is a wasteful number, since it uses less digits than its factorization.

31313123001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10437707667004.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31313123001003 its reverse (30010032131313), we get a palindrome (61323155132316).

The spelling of 31313123001003 in words is "thirty-one trillion, three hundred thirteen billion, one hundred twenty-three million, one thousand, three".