3167996021 has 4 divisors (see below), whose sum is σ = 3219930444. Its totient is φ = 3116061600.

The previous prime is 3167996003. The next prime is 3167996071. The reversal of 3167996021 is 1206997613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1206997613 = 613 ⋅1969001.

It can be written as a sum of positive squares in 2 ways, for example, as 275062225 + 2892933796 = 16585^2 + 53786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3167996021 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 (3167996071) 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, 25967120 + ... + 25967241.

It is an arithmetic number, because the mean of its divisors is an integer number (804982611).

Almost surely, 2^3167996021 is an apocalyptic number.

It is an amenable number.

3167996021 is a deficient number, since it is larger than the sum of its proper divisors (51934423).

3167996021 is an equidigital number, since it uses as much as digits as its factorization.

3167996021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51934422.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 3167996021 is about 56284.9537709680. The cubic root of 3167996021 is about 1468.6834775219.

The spelling of 3167996021 in words is "three billion, one hundred sixty-seven million, nine hundred ninety-six thousand, twenty-one".