2315315542021 has 8 divisors (see below), whose sum is σ = 2375290058904. Its totient is φ = 2255507854080.

The previous prime is 2315315541997. The next prime is 2315315542031. The reversal of 2315315542021 is 1202455135132.

It can be written as a sum of positive squares in 4 ways, for example, as 94577776225 + 2220737765796 = 307535^2 + 1490214^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2315315542021 - 2²¹ = 2315313444869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315315542031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41679120 + ... + 41734633.

It is an arithmetic number, because the mean of its divisors is an integer number (296911257363).

Almost surely, 2^{2315315542021} is an apocalyptic number.

It is an amenable number.

2315315542021 is a deficient number, since it is larger than the sum of its proper divisors (59974516883).

2315315542021 is an equidigital number, since it uses as much as digits as its factorization.

2315315542021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83414471.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 2315315542021 in words is "two trillion, three hundred fifteen billion, three hundred fifteen million, five hundred forty-two thousand, twenty-one".