315488149 has 2 divisors, whose sum is σ = 315488150. Its totient is φ = 315488148.

The previous prime is 315488143. The next prime is 315488197. The reversal of 315488149 is 941884513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254179249 + 61308900 = 15943^2 + 7830^2 .

It is a cyclic number.

It is not a de Polignac number, because 315488149 - 2⁹ = 315487637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315488143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157744074 + 157744075.

It is an arithmetic number, because the mean of its divisors is an integer number (157744075).

Almost surely, 2^315488149 is an apocalyptic number.

It is an amenable number.

315488149 is a deficient number, since it is larger than the sum of its proper divisors (1).

315488149 is an equidigital number, since it uses as much as digits as its factorization.

315488149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 43.

The square root of 315488149 is about 17761.9860657529. The cubic root of 315488149 is about 680.7605022335.

The spelling of 315488149 in words is "three hundred fifteen million, four hundred eighty-eight thousand, one hundred forty-nine".