312646823 has 2 divisors, whose sum is σ = 312646824. Its totient is φ = 312646822.

The previous prime is 312646801. The next prime is 312646891. The reversal of 312646823 is 328646213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312646823 - 2¹² = 312642727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312643823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156323411 + 156323412.

It is an arithmetic number, because the mean of its divisors is an integer number (156323412).

Almost surely, 2^312646823 is an apocalyptic number.

312646823 is a deficient number, since it is larger than the sum of its proper divisors (1).

312646823 is an equidigital number, since it uses as much as digits as its factorization.

312646823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 312646823 is about 17681.8218235565. The cubic root of 312646823 is about 678.7106645590.

The spelling of 312646823 in words is "three hundred twelve million, six hundred forty-six thousand, eight hundred twenty-three".