312020747 has 2 divisors, whose sum is σ = 312020748. Its totient is φ = 312020746.

The previous prime is 312020743. The next prime is 312020759. The reversal of 312020747 is 747020213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312020747 - 2² = 312020743 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312020743) 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 as a sum of consecutive naturals, namely, 156010373 + 156010374.

It is an arithmetic number, because the mean of its divisors is an integer number (156010374).

Almost surely, 2^312020747 is an apocalyptic number.

312020747 is a deficient number, since it is larger than the sum of its proper divisors (1).

312020747 is an equidigital number, since it uses as much as digits as its factorization.

312020747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 312020747 is about 17664.1090066836. The cubic root of 312020747 is about 678.2573219157.

The spelling of 312020747 in words is "three hundred twelve million, twenty thousand, seven hundred forty-seven".