315160121161309 has 2 divisors, whose sum is σ = 315160121161310. Its totient is φ = 315160121161308.

The previous prime is 315160121161307. The next prime is 315160121161337. The reversal of 315160121161309 is 903161121061513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237121501562500 + 78038619598809 = 15398750^2 + 8833947^2 .

It is a cyclic number.

It is not a de Polignac number, because 315160121161309 - 2¹ = 315160121161307 is a prime.

Together with 315160121161307, 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 (315160121161307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157580060580654 + 157580060580655.

It is an arithmetic number, because the mean of its divisors is an integer number (157580060580655).

Almost surely, 2^{315160121161309} is an apocalyptic number.

It is an amenable number.

315160121161309 is a deficient number, since it is larger than the sum of its proper divisors (1).

315160121161309 is an equidigital number, since it uses as much as digits as its factorization.

315160121161309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 315160121161309 in words is "three hundred fifteen trillion, one hundred sixty billion, one hundred twenty-one million, one hundred sixty-one thousand, three hundred nine".