2931161257 has 2 divisors, whose sum is σ = 2931161258. Its totient is φ = 2931161256.

The previous prime is 2931161221. The next prime is 2931161273. The reversal of 2931161257 is 7521611392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2815469721 + 115691536 = 53061^2 + 10756^2 .

It is a cyclic number.

It is not a de Polignac number, because 2931161257 - 2¹⁵ = 2931128489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2931161357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1465580628 + 1465580629.

It is an arithmetic number, because the mean of its divisors is an integer number (1465580629).

Almost surely, 2^2931161257 is an apocalyptic number.

It is an amenable number.

2931161257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2931161257 is an equidigital number, since it uses as much as digits as its factorization.

2931161257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 2931161257 is about 54140.2000088659. The cubic root of 2931161257 is about 1431.1326962156.

The spelling of 2931161257 in words is "two billion, nine hundred thirty-one million, one hundred sixty-one thousand, two hundred fifty-seven".