312123299 has 4 divisors (see below), whose sum is σ = 312759480. Its totient is φ = 311487120.

The previous prime is 312123257. The next prime is 312123311. The reversal of 312123299 is 992321213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312123299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312123209) 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, 317354 + ... + 318335.

It is an arithmetic number, because the mean of its divisors is an integer number (78189870).

Almost surely, 2^312123299 is an apocalyptic number.

312123299 is a deficient number, since it is larger than the sum of its proper divisors (636181).

312123299 is an equidigital number, since it uses as much as digits as its factorization.

312123299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636180.

The product of its digits is 5832, while the sum is 32.

The square root of 312123299 is about 17667.0116035508. The cubic root of 312123299 is about 678.3316214899.

The spelling of 312123299 in words is "three hundred twelve million, one hundred twenty-three thousand, two hundred ninety-nine".