2313121321003 has 4 divisors (see below), whose sum is σ = 2449187281080. Its totient is φ = 2177055360928.

The previous prime is 2313121321001. The next prime is 2313121321013. The reversal of 2313121321003 is 3001231213132.

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 2313121321003 - 2¹ = 2313121321001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2313121321001) 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, 68032980013 + ... + 68032980046.

It is an arithmetic number, because the mean of its divisors is an integer number (612296820270).

Almost surely, 2^{2313121321003} is an apocalyptic number.

2313121321003 is a deficient number, since it is larger than the sum of its proper divisors (136065960077).

2313121321003 is a wasteful number, since it uses less digits than its factorization.

2313121321003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136065960076.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2313121321003 its reverse (3001231213132), we get a palindrome (5314352534135).

The spelling of 2313121321003 in words is "two trillion, three hundred thirteen billion, one hundred twenty-one million, three hundred twenty-one thousand, three".