312422661 has 12 divisors (see below), whose sum is σ = 452875488. Its totient is φ = 207544104.

The previous prime is 312422659. The next prime is 312422683. The reversal of 312422661 is 166224213.

It is not a de Polignac number, because 312422661 - 2¹ = 312422659 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312422161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58785 + ... + 63878.

It is an arithmetic number, because the mean of its divisors is an integer number (37739624).

Almost surely, 2^312422661 is an apocalyptic number.

It is an amenable number.

312422661 is a deficient number, since it is larger than the sum of its proper divisors (140452827).

312422661 is a wasteful number, since it uses less digits than its factorization.

312422661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122952 (or 122949 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 312422661 is about 17675.4819170511. The cubic root of 312422661 is about 678.5484181048.

Adding to 312422661 its reverse (166224213), we get a palindrome (478646874).

The spelling of 312422661 in words is "three hundred twelve million, four hundred twenty-two thousand, six hundred sixty-one".