12312220323 has 8 divisors (see below), whose sum is σ = 17679085648. Its totient is φ = 7576750944.

The previous prime is 12312220303. The next prime is 12312220331. The reversal of 12312220323 is 32302221321.

It is a happy number.

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

It is not a de Polignac number, because 12312220323 - 2⁶ = 12312220259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12312220323.

It is not an unprimeable number, because it can be changed into a prime (12312220303) 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, 157848940 + ... + 157849017.

It is an arithmetic number, because the mean of its divisors is an integer number (2209885706).

Almost surely, 2^12312220323 is an apocalyptic number.

12312220323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12312220323 is a deficient number, since it is larger than the sum of its proper divisors (5366865325).

12312220323 is a wasteful number, since it uses less digits than its factorization.

12312220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315697973.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12312220323 its reverse (32302221321), we get a palindrome (44614441644).

The spelling of 12312220323 in words is "twelve billion, three hundred twelve million, two hundred twenty thousand, three hundred twenty-three".