312223132123 has 4 divisors (see below), whose sum is σ = 356826436720. Its totient is φ = 267619827528.

The previous prime is 312223132099. The next prime is 312223132127. The reversal of 312223132123 is 321231322213.

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

It is a cyclic number.

It is not a de Polignac number, because 312223132123 - 2²¹ = 312221034971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312223132127) 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, 22301652288 + ... + 22301652301.

It is an arithmetic number, because the mean of its divisors is an integer number (89206609180).

Almost surely, 2^312223132123 is an apocalyptic number.

312223132123 is a deficient number, since it is larger than the sum of its proper divisors (44603304597).

312223132123 is an equidigital number, since it uses as much as digits as its factorization.

312223132123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44603304596.

The product of its digits is 2592, while the sum is 25.

Adding to 312223132123 its reverse (321231322213), we get a palindrome (633454454336).

The spelling of 312223132123 in words is "three hundred twelve billion, two hundred twenty-three million, one hundred thirty-two thousand, one hundred twenty-three".