3118923021 has 4 divisors (see below), whose sum is σ = 4158564032. Its totient is φ = 2079282012.

The previous prime is 3118923007. The next prime is 3118923043. The reversal of 3118923021 is 1203298113.

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 not a de Polignac number, because 3118923021 - 2⁷ = 3118922893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3118923021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3118925021) 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, 519820501 + ... + 519820506.

It is an arithmetic number, because the mean of its divisors is an integer number (1039641008).

Almost surely, 2^3118923021 is an apocalyptic number.

It is an amenable number.

3118923021 is a deficient number, since it is larger than the sum of its proper divisors (1039641011).

3118923021 is a wasteful number, since it uses less digits than its factorization.

3118923021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039641010.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 3118923021 is about 55847.3188344794. The cubic root of 3118923021 is about 1461.0605637710.

The spelling of 3118923021 in words is "three billion, one hundred eighteen million, nine hundred twenty-three thousand, twenty-one".