2315256621 has 8 divisors (see below), whose sum is σ = 3087795264. Its totient is φ = 1543111200.

The previous prime is 2315256617. The next prime is 2315256637. The reversal of 2315256621 is 1266525132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2315256621 - 2² = 2315256617 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315256121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84280 + ... + 108321.

It is an arithmetic number, because the mean of its divisors is an integer number (385974408).

Almost surely, 2^2315256621 is an apocalyptic number.

It is an amenable number.

2315256621 is a deficient number, since it is larger than the sum of its proper divisors (772538643).

2315256621 is a wasteful number, since it uses less digits than its factorization.

2315256621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196611.

The product of its digits is 21600, while the sum is 33.

The square root of 2315256621 is about 48117.1135979705. The cubic root of 2315256621 is about 1322.9183634523.

The spelling of 2315256621 in words is "two billion, three hundred fifteen million, two hundred fifty-six thousand, six hundred twenty-one".