3117990257 has 2 divisors, whose sum is σ = 3117990258. Its totient is φ = 3117990256.

The previous prime is 3117990223. The next prime is 3117990277. The reversal of 3117990257 is 7520997113.

3117990257 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., 2689044736 + 428945521 = 51856^2 + 20711^2 .

It is a cyclic number.

It is not a de Polignac number, because 3117990257 - 2¹² = 3117986161 is a prime.

It is not a weakly prime, because it can be changed into another prime (3117990217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558995128 + 1558995129.

It is an arithmetic number, because the mean of its divisors is an integer number (1558995129).

Almost surely, 2^3117990257 is an apocalyptic number.

It is an amenable number.

3117990257 is a deficient number, since it is larger than the sum of its proper divisors (1).

3117990257 is an equidigital number, since it uses as much as digits as its factorization.

3117990257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 3117990257 is about 55838.9671913799. The cubic root of 3117990257 is about 1460.9148980431.

The spelling of 3117990257 in words is "three billion, one hundred seventeen million, nine hundred ninety thousand, two hundred fifty-seven".