623918423 has 2 divisors, whose sum is σ = 623918424. Its totient is φ = 623918422.

The previous prime is 623918419. The next prime is 623918429. The reversal of 623918423 is 324819326.

623918423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623918423 - 2² = 623918419 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623918429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311959211 + 311959212.

It is an arithmetic number, because the mean of its divisors is an integer number (311959212).

Almost surely, 2^623918423 is an apocalyptic number.

623918423 is a deficient number, since it is larger than the sum of its proper divisors (1).

623918423 is an equidigital number, since it uses as much as digits as its factorization.

623918423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 623918423 is about 24978.3590934233. The cubic root of 623918423 is about 854.4944963965.

The spelling of 623918423 in words is "six hundred twenty-three million, nine hundred eighteen thousand, four hundred twenty-three".