20315304534123 has 8 divisors (see below), whose sum is σ = 30096747458000. Its totient is φ = 13543536356064.

The previous prime is 20315304534089. The next prime is 20315304534143. The reversal of 20315304534123 is 32143540351302.

20315304534123 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 5 + 304 + 5 + 341 + 2 + 3 = 666.

It is not a de Polignac number, because 20315304534123 - 2²⁵ = 20315270979691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20315304534143) 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, 376209343198 + ... + 376209343251.

It is an arithmetic number, because the mean of its divisors is an integer number (3762093432250).

Almost surely, 2^{20315304534123} is an apocalyptic number.

20315304534123 is a deficient number, since it is larger than the sum of its proper divisors (9781442923877).

20315304534123 is an equidigital number, since it uses as much as digits as its factorization.

20315304534123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752418686458 (or 752418686452 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 20315304534123 its reverse (32143540351302), we get a palindrome (52458844885425).

The spelling of 20315304534123 in words is "twenty trillion, three hundred fifteen billion, three hundred four million, five hundred thirty-four thousand, one hundred twenty-three".