312331069 has 2 divisors, whose sum is σ = 312331070. Its totient is φ = 312331068.

The previous prime is 312331057. The next prime is 312331081. The reversal of 312331069 is 960133213.

It is a balanced prime because it is at equal distance from previous prime (312331057) and next prime (312331081).

It can be written as a sum of positive squares in only one way, i.e., 299636100 + 12694969 = 17310^2 + 3563^2 .

It is a cyclic number.

It is not a de Polignac number, because 312331069 - 2⁵ = 312331037 is a prime.

It is a super-2 number, since 2×312331069² = 195101393325365522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312331009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156165534 + 156165535.

It is an arithmetic number, because the mean of its divisors is an integer number (156165535).

Almost surely, 2^312331069 is an apocalyptic number.

It is an amenable number.

312331069 is a deficient number, since it is larger than the sum of its proper divisors (1).

312331069 is an equidigital number, since it uses as much as digits as its factorization.

312331069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 312331069 is about 17672.8907935289. The cubic root of 312331069 is about 678.4821022995.

The spelling of 312331069 in words is "three hundred twelve million, three hundred thirty-one thousand, sixty-nine".