623920343 has 2 divisors, whose sum is σ = 623920344. Its totient is φ = 623920342.

The previous prime is 623920313. The next prime is 623920387. The reversal of 623920343 is 343029326.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623920343 - 2⁶ = 623920279 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 (623920313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311960171 + 311960172.

It is an arithmetic number, because the mean of its divisors is an integer number (311960172).

Almost surely, 2^623920343 is an apocalyptic number.

623920343 is a deficient number, since it is larger than the sum of its proper divisors (1).

623920343 is an equidigital number, since it uses as much as digits as its factorization.

623920343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 623920343 is about 24978.3975266629. The cubic root of 623920343 is about 854.4953729148.

Adding to 623920343 its reverse (343029326), we get a palindrome (966949669).

The spelling of 623920343 in words is "six hundred twenty-three million, nine hundred twenty thousand, three hundred forty-three".