315541232309 has 2 divisors, whose sum is σ = 315541232310. Its totient is φ = 315541232308.

The previous prime is 315541232183. The next prime is 315541232311. The reversal of 315541232309 is 903232145513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303937203025 + 11604029284 = 551305^2 + 107722^2 .

It is a cyclic number.

It is not a de Polignac number, because 315541232309 - 2²⁴ = 315524455093 is a prime.

Together with 315541232311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315541232329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157770616154 + 157770616155.

It is an arithmetic number, because the mean of its divisors is an integer number (157770616155).

Almost surely, 2^315541232309 is an apocalyptic number.

It is an amenable number.

315541232309 is a deficient number, since it is larger than the sum of its proper divisors (1).

315541232309 is an equidigital number, since it uses as much as digits as its factorization.

315541232309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 38.

The spelling of 315541232309 in words is "three hundred fifteen billion, five hundred forty-one million, two hundred thirty-two thousand, three hundred nine".