3130456921 has 2 divisors, whose sum is σ = 3130456922. Its totient is φ = 3130456920.

The previous prime is 3130456913. The next prime is 3130456933. The reversal of 3130456921 is 1296540313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2559246921 + 571210000 = 50589^2 + 23900^2 .

It is a cyclic number.

It is not a de Polignac number, because 3130456921 - 2³ = 3130456913 is a prime.

It is not a weakly prime, because it can be changed into another prime (3130456951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565228460 + 1565228461.

It is an arithmetic number, because the mean of its divisors is an integer number (1565228461).

Almost surely, 2^3130456921 is an apocalyptic number.

It is an amenable number.

3130456921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3130456921 is an equidigital number, since it uses as much as digits as its factorization.

3130456921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 3130456921 is about 55950.4863339006. The cubic root of 3130456921 is about 1462.8593680498.

The spelling of 3130456921 in words is "three billion, one hundred thirty million, four hundred fifty-six thousand, nine hundred twenty-one".