12312355513 has 4 divisors (see below), whose sum is σ = 12316464000. Its totient is φ = 12308247028.

The previous prime is 12312355453. The next prime is 12312355541. The reversal of 12312355513 is 31555321321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12312355513 - 2¹³ = 12312347321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12312355613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049745 + ... + 2055742.

It is an arithmetic number, because the mean of its divisors is an integer number (3079116000).

Almost surely, 2^12312355513 is an apocalyptic number.

It is an amenable number.

12312355513 is a deficient number, since it is larger than the sum of its proper divisors (4108487).

12312355513 is an equidigital number, since it uses as much as digits as its factorization.

12312355513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108486.

The product of its digits is 13500, while the sum is 31.

Adding to 12312355513 its reverse (31555321321), we get a palindrome (43867676834).

The spelling of 12312355513 in words is "twelve billion, three hundred twelve million, three hundred fifty-five thousand, five hundred thirteen".