16231297 has 2 divisors, whose sum is σ = 16231298. Its totient is φ = 16231296.

The previous prime is 16231279. The next prime is 16231333. The reversal of 16231297 is 79213261.

Together with previous prime (16231279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16128256 + 103041 = 4016^2 + 321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16231297 is a prime.

It is not a weakly prime, because it can be changed into another prime (16231217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8115648 + 8115649.

It is an arithmetic number, because the mean of its divisors is an integer number (8115649).

Almost surely, 2^16231297 is an apocalyptic number.

It is an amenable number.

16231297 is a deficient number, since it is larger than the sum of its proper divisors (1).

16231297 is an equidigital number, since it uses as much as digits as its factorization.

16231297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 16231297 is about 4028.8083846219. The cubic root of 16231297 is about 253.1926386738.

It can be divided in two parts, 162312 and 97, that added together give a square (162409 = 403²).

The spelling of 16231297 in words is "sixteen million, two hundred thirty-one thousand, two hundred ninety-seven".