3172670981 has 2 divisors, whose sum is σ = 3172670982. Its totient is φ = 3172670980.

The previous prime is 3172670971. The next prime is 3172671023. The reversal of 3172670981 is 1890762713.

3172670981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2547220900 + 625450081 = 50470^2 + 25009^2 .

It is a cyclic number.

It is not a de Polignac number, because 3172670981 - 2¹⁰ = 3172669957 is a prime.

It is a super-2 number, since 2×3172670981² = 20131682307359004722, which contains 22 as substring.

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 (3172670971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586335490 + 1586335491.

It is an arithmetic number, because the mean of its divisors is an integer number (1586335491).

Almost surely, 2^3172670981 is an apocalyptic number.

It is an amenable number.

3172670981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3172670981 is an equidigital number, since it uses as much as digits as its factorization.

3172670981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 3172670981 is about 56326.4678548194. The cubic root of 3172670981 is about 1469.4055598588.

The spelling of 3172670981 in words is "three billion, one hundred seventy-two million, six hundred seventy thousand, nine hundred eighty-one".