315551310356121 has 24 divisors (see below), whose sum is σ = 489433901896800. Its totient is φ = 180312315648192.

The previous prime is 315551310356081. The next prime is 315551310356123. The reversal of 315551310356121 is 121653013155513.

It is not a de Polignac number, because 315551310356121 - 2⁹ = 315551310355609 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (315551310356123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6381171 + ... + 25919528.

It is an arithmetic number, because the mean of its divisors is an integer number (20393079245700).

Almost surely, 2^{315551310356121} is an apocalyptic number.

It is an amenable number.

315551310356121 is a deficient number, since it is larger than the sum of its proper divisors (173882591540679).

315551310356121 is a wasteful number, since it uses less digits than its factorization.

315551310356121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32367173 (or 32367166 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 42.

The spelling of 315551310356121 in words is "three hundred fifteen trillion, five hundred fifty-one billion, three hundred ten million, three hundred fifty-six thousand, one hundred twenty-one".