312961811 has 2 divisors, whose sum is σ = 312961812. Its totient is φ = 312961810.

The previous prime is 312961801. The next prime is 312961843. The reversal of 312961811 is 118169213.

It is an a-pointer prime, because the next prime (312961843) can be obtained adding 312961811 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312961811 - 2¹⁴ = 312945427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312961801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156480905 + 156480906.

It is an arithmetic number, because the mean of its divisors is an integer number (156480906).

Almost surely, 2^312961811 is an apocalyptic number.

312961811 is a deficient number, since it is larger than the sum of its proper divisors (1).

312961811 is an equidigital number, since it uses as much as digits as its factorization.

312961811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 32.

The square root of 312961811 is about 17690.7266950795. The cubic root of 312961811 is about 678.9385190620.

The spelling of 312961811 in words is "three hundred twelve million, nine hundred sixty-one thousand, eight hundred eleven".