23512331421305 has 4 divisors (see below), whose sum is σ = 28214797705572. Its totient is φ = 18809865137040.

The previous prime is 23512331421253. The next prime is 23512331421323. The reversal of 23512331421305 is 50312413321532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9491260862521 + 14021070558784 = 3080789^2 + 3744472^2 .

It is not a de Polignac number, because 23512331421305 - 2⁸ = 23512331421049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2351233142126 + ... + 2351233142135.

It is an arithmetic number, because the mean of its divisors is an integer number (7053699426393).

Almost surely, 2^{23512331421305} is an apocalyptic number.

It is an amenable number.

23512331421305 is a deficient number, since it is larger than the sum of its proper divisors (4702466284267).

23512331421305 is an equidigital number, since it uses as much as digits as its factorization.

23512331421305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702466284266.

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 23512331421305 its reverse (50312413321532), we get a palindrome (73824744742837).

The spelling of 23512331421305 in words is "twenty-three trillion, five hundred twelve billion, three hundred thirty-one million, four hundred twenty-one thousand, three hundred five".