312242271 has 16 divisors (see below), whose sum is σ = 455165568. Its totient is φ = 188823200.

The previous prime is 312242263. The next prime is 312242339. The reversal of 312242271 is 172242213.

It is a cyclic number.

It is not a de Polignac number, because 312242271 - 2³ = 312242263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312242201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5281 + ... + 25541.

It is an arithmetic number, because the mean of its divisors is an integer number (28447848).

Almost surely, 2^312242271 is an apocalyptic number.

312242271 is a deficient number, since it is larger than the sum of its proper divisors (142923297).

312242271 is a wasteful number, since it uses less digits than its factorization.

312242271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20742.

The product of its digits is 1344, while the sum is 24.

The square root of 312242271 is about 17670.3783490903. The cubic root of 312242271 is about 678.4177970689.

Adding to 312242271 its reverse (172242213), we get a palindrome (484484484).

The spelling of 312242271 in words is "three hundred twelve million, two hundred forty-two thousand, two hundred seventy-one".