312340655 has 16 divisors (see below), whose sum is σ = 422074368. Its totient is φ = 219828000.

The previous prime is 312340627. The next prime is 312340661. The reversal of 312340655 is 556043213.

It is a de Polignac number, because none of the positive numbers 2^k-312340655 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 89891 + ... + 93300.

It is an arithmetic number, because the mean of its divisors is an integer number (26379648).

Almost surely, 2^312340655 is an apocalyptic number.

312340655 is a deficient number, since it is larger than the sum of its proper divisors (109733713).

312340655 is a wasteful number, since it uses less digits than its factorization.

312340655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183238.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 312340655 is about 17673.1619977864. The cubic root of 312340655 is about 678.4890435055.

Adding to 312340655 its reverse (556043213), we get a palindrome (868383868).

The spelling of 312340655 in words is "three hundred twelve million, three hundred forty thousand, six hundred fifty-five".