315205153 has 2 divisors, whose sum is σ = 315205154. Its totient is φ = 315205152.

The previous prime is 315205141. The next prime is 315205169. The reversal of 315205153 is 351502513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302481664 + 12723489 = 17392^2 + 3567^2 .

It is a cyclic number.

It is not a de Polignac number, because 315205153 - 2¹³ = 315196961 is a prime.

It is equal to p_17030482 and since 315205153 and 17030482 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (315205123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157602576 + 157602577.

It is an arithmetic number, because the mean of its divisors is an integer number (157602577).

Almost surely, 2^315205153 is an apocalyptic number.

It is an amenable number.

315205153 is a deficient number, since it is larger than the sum of its proper divisors (1).

315205153 is an equidigital number, since it uses as much as digits as its factorization.

315205153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 315205153 is about 17754.0179396102. The cubic root of 315205153 is about 680.5568916994.

Adding to 315205153 its reverse (351502513), we get a palindrome (666707666).

The spelling of 315205153 in words is "three hundred fifteen million, two hundred five thousand, one hundred fifty-three".