16231247 has 4 divisors (see below), whose sum is σ = 16280616. Its totient is φ = 16181880.

The previous prime is 16231217. The next prime is 16231273. The reversal of 16231247 is 74213261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74213261 = 8101 ⋅9161.

It is a cyclic number.

It is not a de Polignac number, because 16231247 - 2¹² = 16227151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16231217) 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 in 3 ways as a sum of consecutive naturals, for example, 24188 + ... + 24849.

It is an arithmetic number, because the mean of its divisors is an integer number (4070154).

Almost surely, 2^16231247 is an apocalyptic number.

16231247 is a deficient number, since it is larger than the sum of its proper divisors (49369).

16231247 is an equidigital number, since it uses as much as digits as its factorization.

16231247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49368.

The product of its digits is 2016, while the sum is 26.

The square root of 16231247 is about 4028.8021793084. The cubic root of 16231247 is about 253.1923786896.

The spelling of 16231247 in words is "sixteen million, two hundred thirty-one thousand, two hundred forty-seven".