34221287 has 2 divisors, whose sum is σ = 34221288. Its totient is φ = 34221286.

The previous prime is 34221251. The next prime is 34221329. The reversal of 34221287 is 78212243.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34221287 - 2¹⁴ = 34204903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34221587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17110643 + 17110644.

It is an arithmetic number, because the mean of its divisors is an integer number (17110644).

Almost surely, 2^34221287 is an apocalyptic number.

34221287 is a deficient number, since it is larger than the sum of its proper divisors (1).

34221287 is an equidigital number, since it uses as much as digits as its factorization.

34221287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 29.

The square root of 34221287 is about 5849.8963238676. The cubic root of 34221287 is about 324.6624882750.

The spelling of 34221287 in words is "thirty-four million, two hundred twenty-one thousand, two hundred eighty-seven".