3172674821 has 2 divisors, whose sum is σ = 3172674822. Its totient is φ = 3172674820.

The previous prime is 3172674803. The next prime is 3172674829. The reversal of 3172674821 is 1284762713.

3172674821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2444214721 + 728460100 = 49439^2 + 26990^2 .

It is a cyclic number.

It is not a de Polignac number, because 3172674821 - 2²² = 3168480517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3172674829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586337410 + 1586337411.

It is an arithmetic number, because the mean of its divisors is an integer number (1586337411).

Almost surely, 2^3172674821 is an apocalyptic number.

It is an amenable number.

3172674821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3172674821 is an equidigital number, since it uses as much as digits as its factorization.

3172674821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 3172674821 is about 56326.5019418036. The cubic root of 3172674821 is about 1469.4061526837.

The spelling of 3172674821 in words is "three billion, one hundred seventy-two million, six hundred seventy-four thousand, eight hundred twenty-one".