312799243 has 4 divisors (see below), whose sum is σ = 320073688. Its totient is φ = 305524800.

The previous prime is 312799231. The next prime is 312799247. The reversal of 312799243 is 342997213.

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 312799243 - 2¹⁷ = 312668171 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312799196 and 312799205.

It is not an unprimeable number, because it can be changed into a prime (312799247) 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, 3637158 + ... + 3637243.

It is an arithmetic number, because the mean of its divisors is an integer number (80018422).

Almost surely, 2^312799243 is an apocalyptic number.

312799243 is a deficient number, since it is larger than the sum of its proper divisors (7274445).

312799243 is an equidigital number, since it uses as much as digits as its factorization.

312799243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7274444.

The product of its digits is 81648, while the sum is 40.

The square root of 312799243 is about 17686.1313746110. The cubic root of 312799243 is about 678.8209405055.

The spelling of 312799243 in words is "three hundred twelve million, seven hundred ninety-nine thousand, two hundred forty-three".