126023231 has 2 divisors, whose sum is σ = 126023232. Its totient is φ = 126023230.

The previous prime is 126023213. The next prime is 126023251. The reversal of 126023231 is 132320621.

It is a happy number.

Together with previous prime (126023213) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (126023251) can be obtained adding 126023231 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126023231 is a prime.

It is a super-2 number, since 2×126023231² = 31763709503358722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126023201) 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 as a sum of consecutive naturals, namely, 63011615 + 63011616.

It is an arithmetic number, because the mean of its divisors is an integer number (63011616).

Almost surely, 2^126023231 is an apocalyptic number.

126023231 is a deficient number, since it is larger than the sum of its proper divisors (1).

126023231 is an equidigital number, since it uses as much as digits as its factorization.

126023231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 126023231 is about 11226.0069036145. The cubic root of 126023231 is about 501.3606021651.

Adding to 126023231 its reverse (132320621), we get a palindrome (258343852).

The spelling of 126023231 in words is "one hundred twenty-six million, twenty-three thousand, two hundred thirty-one".