315791149 has 2 divisors, whose sum is σ = 315791150. Its totient is φ = 315791148.

The previous prime is 315791137. The next prime is 315791159. The reversal of 315791149 is 941197513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301022500 + 14768649 = 17350^2 + 3843^2 .

It is a cyclic number.

It is not a de Polignac number, because 315791149 - 2¹⁵ = 315758381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315791159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157895574 + 157895575.

It is an arithmetic number, because the mean of its divisors is an integer number (157895575).

Almost surely, 2^315791149 is an apocalyptic number.

It is an amenable number.

315791149 is a deficient number, since it is larger than the sum of its proper divisors (1).

315791149 is an equidigital number, since it uses as much as digits as its factorization.

315791149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 315791149 is about 17770.5134703531. The cubic root of 315791149 is about 680.9783703561.

The spelling of 315791149 in words is "three hundred fifteen million, seven hundred ninety-one thousand, one hundred forty-nine".