315142241509 has 2 divisors, whose sum is σ = 315142241510. Its totient is φ = 315142241508.

The previous prime is 315142241507. The next prime is 315142241543. The reversal of 315142241509 is 905142241513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230985972100 + 84156269409 = 480610^2 + 290097^2 .

It is a cyclic number.

It is not a de Polignac number, because 315142241509 - 2¹ = 315142241507 is a prime.

Together with 315142241507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315142241503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157571120754 + 157571120755.

It is an arithmetic number, because the mean of its divisors is an integer number (157571120755).

Almost surely, 2^315142241509 is an apocalyptic number.

It is an amenable number.

315142241509 is a deficient number, since it is larger than the sum of its proper divisors (1).

315142241509 is an equidigital number, since it uses as much as digits as its factorization.

315142241509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 315142241509 in words is "three hundred fifteen billion, one hundred forty-two million, two hundred forty-one thousand, five hundred nine".