315143210309 has 2 divisors, whose sum is σ = 315143210310. Its totient is φ = 315143210308.

The previous prime is 315143210297. The next prime is 315143210401. The reversal of 315143210309 is 903012341513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232603644100 + 82539566209 = 482290^2 + 287297^2 .

It is a cyclic number.

It is not a de Polignac number, because 315143210309 - 2¹⁶ = 315143144773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315143210509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157571605154 + 157571605155.

It is an arithmetic number, because the mean of its divisors is an integer number (157571605155).

Almost surely, 2^315143210309 is an apocalyptic number.

It is an amenable number.

315143210309 is a deficient number, since it is larger than the sum of its proper divisors (1).

315143210309 is an equidigital number, since it uses as much as digits as its factorization.

315143210309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The spelling of 315143210309 in words is "three hundred fifteen billion, one hundred forty-three million, two hundred ten thousand, three hundred nine".