3121303001023 has 4 divisors (see below), whose sum is σ = 3285582106360. Its totient is φ = 2957023895688.

The previous prime is 3121303000957. The next prime is 3121303001143. The reversal of 3121303001023 is 3201003031213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121303001023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 164279105317 = 3121303001023 / (3 + 1 + 2 + 1 + 3 + 0 + 3 + 0 + 0 + 1 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121303008023) 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, 82139552640 + ... + 82139552677.

It is an arithmetic number, because the mean of its divisors is an integer number (821395526590).

Almost surely, 2^{3121303001023} is an apocalyptic number.

3121303001023 is a deficient number, since it is larger than the sum of its proper divisors (164279105337).

3121303001023 is a wasteful number, since it uses less digits than its factorization.

3121303001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164279105336.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 3121303001023 its reverse (3201003031213), we get a palindrome (6322306032236).

The spelling of 3121303001023 in words is "three trillion, one hundred twenty-one billion, three hundred three million, one thousand, twenty-three".