313251149 has 2 divisors, whose sum is σ = 313251150. Its totient is φ = 313251148.

The previous prime is 313251143. The next prime is 313251181. The reversal of 313251149 is 941152313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 285001924 + 28249225 = 16882^2 + 5315^2 .

It is a cyclic number.

It is not a de Polignac number, because 313251149 - 2⁸ = 313250893 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (313251143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156625574 + 156625575.

It is an arithmetic number, because the mean of its divisors is an integer number (156625575).

Almost surely, 2^313251149 is an apocalyptic number.

It is an amenable number.

313251149 is a deficient number, since it is larger than the sum of its proper divisors (1).

313251149 is an equidigital number, since it uses as much as digits as its factorization.

313251149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 313251149 is about 17698.9024800975. The cubic root of 313251149 is about 679.1476843119.

The spelling of 313251149 in words is "three hundred thirteen million, two hundred fifty-one thousand, one hundred forty-nine".