3113042021 has 4 divisors (see below), whose sum is σ = 3114876000. Its totient is φ = 3111208044.

The previous prime is 3113042017. The next prime is 3113042047. The reversal of 3113042021 is 1202403113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3113042021 - 2² = 3113042017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3113042011) 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, 914441 + ... + 917838.

It is an arithmetic number, because the mean of its divisors is an integer number (778719000).

Almost surely, 2^3113042021 is an apocalyptic number.

It is an amenable number.

3113042021 is a deficient number, since it is larger than the sum of its proper divisors (1833979).

3113042021 is a wasteful number, since it uses less digits than its factorization.

3113042021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833978.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3113042021 is about 55794.6415079441. The cubic root of 3113042021 is about 1460.1416671502.

Adding to 3113042021 its reverse (1202403113), we get a palindrome (4315445134).

The spelling of 3113042021 in words is "three billion, one hundred thirteen million, forty-two thousand, twenty-one".