3171487997 has 2 divisors, whose sum is σ = 3171487998. Its totient is φ = 3171487996.

The previous prime is 3171487981. The next prime is 3171488003. The reversal of 3171487997 is 7997841713.

3171487997 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., 2990558596 + 180929401 = 54686^2 + 13451^2 .

It is a cyclic number.

It is not a de Polignac number, because 3171487997 - 2⁴ = 3171487981 is a prime.

It is a super-2 number, since 2×3171487997² = 20116672230230144018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3171487097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1585743998 + 1585743999.

It is an arithmetic number, because the mean of its divisors is an integer number (1585743999).

Almost surely, 2^3171487997 is an apocalyptic number.

It is an amenable number.

3171487997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3171487997 is an equidigital number, since it uses as much as digits as its factorization.

3171487997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 56.

The square root of 3171487997 is about 56315.9657379681. The cubic root of 3171487997 is about 1469.2229062554. Note that the first 3 decimals are identical.

The spelling of 3171487997 in words is "three billion, one hundred seventy-one million, four hundred eighty-seven thousand, nine hundred ninety-seven".