623351 has 2 divisors, whose sum is σ = 623352. Its totient is φ = 623350.

The previous prime is 623341. The next prime is 623353. The reversal of 623351 is 153326.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 623351 - 2¹⁴ = 606967 is a prime.

It is a Sophie Germain prime.

Together with 623353, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311675 + 311676.

It is an arithmetic number, because the mean of its divisors is an integer number (311676).

2⁶²³³⁵¹ is an apocalyptic number.

623351 is a deficient number, since it is larger than the sum of its proper divisors (1).

623351 is an equidigital number, since it uses as much as digits as its factorization.

623351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 20.

The square root of 623351 is about 789.5258070513. The cubic root of 623351 is about 85.4235377644.

Adding to 623351 its reverse (153326), we get a palindrome (776677).

The spelling of 623351 in words is "six hundred twenty-three thousand, three hundred fifty-one".