3113021243 has 4 divisors (see below), whose sum is σ = 3115368480. Its totient is φ = 3110674008.

The previous prime is 3113021239. The next prime is 3113021257. The reversal of 3113021243 is 3421203113.

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 3113021243 - 2² = 3113021239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3113021843) 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, 1171628 + ... + 1174281.

It is an arithmetic number, because the mean of its divisors is an integer number (778842120).

Almost surely, 2^3113021243 is an apocalyptic number.

3113021243 is a deficient number, since it is larger than the sum of its proper divisors (2347237).

3113021243 is a wasteful number, since it uses less digits than its factorization.

3113021243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347236.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 3113021243 is about 55794.4553069568. The cubic root of 3113021243 is about 1460.1384185710.

Adding to 3113021243 its reverse (3421203113), we get a palindrome (6534224356).

The spelling of 3113021243 in words is "three billion, one hundred thirteen million, twenty-one thousand, two hundred forty-three".