623236231 has 2 divisors, whose sum is σ = 623236232. Its totient is φ = 623236230.

The previous prime is 623236219. The next prime is 623236249. The reversal of 623236231 is 132632326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623236231 - 2⁵ = 623236199 is a prime.

It is a super-2 number, since 2×623236231² = 776846799262170722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 623236231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623236261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311618115 + 311618116.

It is an arithmetic number, because the mean of its divisors is an integer number (311618116).

Almost surely, 2^623236231 is an apocalyptic number.

623236231 is a deficient number, since it is larger than the sum of its proper divisors (1).

623236231 is an equidigital number, since it uses as much as digits as its factorization.

623236231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 28.

The square root of 623236231 is about 24964.6996977733. The cubic root of 623236231 is about 854.1829482436.

Adding to 623236231 its reverse (132632326), we get a palindrome (755868557).

The spelling of 623236231 in words is "six hundred twenty-three million, two hundred thirty-six thousand, two hundred thirty-one".