445312319 has 2 divisors, whose sum is σ = 445312320. Its totient is φ = 445312318.

The previous prime is 445312289. The next prime is 445312327. The reversal of 445312319 is 913213544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445312319 - 2²⁸ = 176876863 is a prime.

It is a super-2 number, since 2×445312319² = 396606122906315522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445312339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222656159 + 222656160.

It is an arithmetic number, because the mean of its divisors is an integer number (222656160).

Almost surely, 2^445312319 is an apocalyptic number.

445312319 is a deficient number, since it is larger than the sum of its proper divisors (1).

445312319 is an equidigital number, since it uses as much as digits as its factorization.

445312319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 445312319 is about 21102.4244815614. The cubic root of 445312319 is about 763.6392395742.

The spelling of 445312319 in words is "four hundred forty-five million, three hundred twelve thousand, three hundred nineteen".