3126344021 has 4 divisors (see below), whose sum is σ = 3128283852. Its totient is φ = 3124404192.

The previous prime is 3126344003. The next prime is 3126344027. The reversal of 3126344021 is 1204436213.

3126344021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1344322225 + 1782021796 = 36665^2 + 42214^2 .

It is a cyclic number.

It is not a de Polignac number, because 3126344021 - 2¹⁴ = 3126327637 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 (3126344027) 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, 967496 + ... + 970721.

It is an arithmetic number, because the mean of its divisors is an integer number (782070963).

Almost surely, 2^3126344021 is an apocalyptic number.

It is an amenable number.

3126344021 is a deficient number, since it is larger than the sum of its proper divisors (1939831).

3126344021 is a wasteful number, since it uses less digits than its factorization.

3126344021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939830.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 3126344021 is about 55913.7194345002. The cubic root of 3126344021 is about 1462.2184359317.

The spelling of 3126344021 in words is "three billion, one hundred twenty-six million, three hundred forty-four thousand, twenty-one".