312240311 has 8 divisors (see below), whose sum is σ = 316553280. Its totient is φ = 307936512.

The previous prime is 312240307. The next prime is 312240347. The reversal of 312240311 is 113042213.

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

It is a cyclic number.

It is not a de Polignac number, because 312240311 - 2² = 312240307 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 312240311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312240211) 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, 92591 + ... + 95903.

It is an arithmetic number, because the mean of its divisors is an integer number (39569160).

Almost surely, 2^312240311 is an apocalyptic number.

312240311 is a deficient number, since it is larger than the sum of its proper divisors (4312969).

312240311 is a wasteful number, since it uses less digits than its factorization.

312240311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4585.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 312240311 is about 17670.3228889571. The cubic root of 312240311 is about 678.4163775497.

Adding to 312240311 its reverse (113042213), we get a palindrome (425282524).

The spelling of 312240311 in words is "three hundred twelve million, two hundred forty thousand, three hundred eleven".