312408231 has 4 divisors (see below), whose sum is σ = 416544312. Its totient is φ = 208272152.

The previous prime is 312408227. The next prime is 312408247. The reversal of 312408231 is 132804213.

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 312408231 - 2² = 312408227 is a prime.

It is a super-2 number, since 2×312408231² = 195197805593098722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312408211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52068036 + ... + 52068041.

It is an arithmetic number, because the mean of its divisors is an integer number (104136078).

Almost surely, 2^312408231 is an apocalyptic number.

312408231 is a deficient number, since it is larger than the sum of its proper divisors (104136081).

312408231 is a wasteful number, since it uses less digits than its factorization.

312408231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104136080.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 312408231 is about 17675.0737197897. The cubic root of 312408231 is about 678.5379711413.

The spelling of 312408231 in words is "three hundred twelve million, four hundred eight thousand, two hundred thirty-one".