315232130909 has 2 divisors, whose sum is σ = 315232130910. Its totient is φ = 315232130908.

The previous prime is 315232130887. The next prime is 315232130947. The reversal of 315232130909 is 909031232513.

It is an a-pointer prime, because the next prime (315232130947) can be obtained adding 315232130909 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233890238884 + 81341892025 = 483622^2 + 285205^2 .

It is a cyclic number.

It is not a de Polignac number, because 315232130909 - 2²⁰ = 315231082333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315232120909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157616065454 + 157616065455.

It is an arithmetic number, because the mean of its divisors is an integer number (157616065455).

Almost surely, 2^315232130909 is an apocalyptic number.

It is an amenable number.

315232130909 is a deficient number, since it is larger than the sum of its proper divisors (1).

315232130909 is an equidigital number, since it uses as much as digits as its factorization.

315232130909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 38.

The spelling of 315232130909 in words is "three hundred fifteen billion, two hundred thirty-two million, one hundred thirty thousand, nine hundred nine".