16234391 has 2 divisors, whose sum is σ = 16234392. Its totient is φ = 16234390.

The previous prime is 16234373. The next prime is 16234399. The reversal of 16234391 is 19343261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16234391 - 2⁶ = 16234327 is a prime.

It is a super-2 number, since 2×16234391² = 527110902281762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16234399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8117195 + 8117196.

It is an arithmetic number, because the mean of its divisors is an integer number (8117196).

Almost surely, 2^16234391 is an apocalyptic number.

16234391 is a deficient number, since it is larger than the sum of its proper divisors (1).

16234391 is an equidigital number, since it uses as much as digits as its factorization.

16234391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 16234391 is about 4029.1923508316. The cubic root of 16234391 is about 253.2087254609.

The spelling of 16234391 in words is "sixteen million, two hundred thirty-four thousand, three hundred ninety-one".