312418069 has 2 divisors, whose sum is σ = 312418070. Its totient is φ = 312418068.

The previous prime is 312418049. The next prime is 312418081. The reversal of 312418069 is 960814213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 286794225 + 25623844 = 16935^2 + 5062^2 .

It is a cyclic number.

It is not a de Polignac number, because 312418069 - 2⁹ = 312417557 is a prime.

It is a super-2 number, since 2×312418069² = 195210099675377522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312418049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156209034 + 156209035.

It is an arithmetic number, because the mean of its divisors is an integer number (156209035).

Almost surely, 2^312418069 is an apocalyptic number.

It is an amenable number.

312418069 is a deficient number, since it is larger than the sum of its proper divisors (1).

312418069 is an equidigital number, since it uses as much as digits as its factorization.

312418069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 312418069 is about 17675.3520191254. The cubic root of 312418069 is about 678.5450936452.

The spelling of 312418069 in words is "three hundred twelve million, four hundred eighteen thousand, sixty-nine".