315551310356123 has 2 divisors, whose sum is σ = 315551310356124. Its totient is φ = 315551310356122.

The previous prime is 315551310356081. The next prime is 315551310356179. The reversal of 315551310356123 is 321653013155513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315551310356123 - 2²⁴ = 315551293578907 is a prime.

It is a super-2 number, since 2×315551310356123² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (315551310356323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157775655178061 + 157775655178062.

It is an arithmetic number, because the mean of its divisors is an integer number (157775655178062).

Almost surely, 2^{315551310356123} is an apocalyptic number.

315551310356123 is a deficient number, since it is larger than the sum of its proper divisors (1).

315551310356123 is an equidigital number, since it uses as much as digits as its factorization.

315551310356123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 607500, while the sum is 44.

The spelling of 315551310356123 in words is "three hundred fifteen trillion, five hundred fifty-one billion, three hundred ten million, three hundred fifty-six thousand, one hundred twenty-three".