624312223 has 4 divisors (see below), whose sum is σ = 624431808. Its totient is φ = 624192640.

The previous prime is 624312197. The next prime is 624312229. The reversal of 624312223 is 322213426.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322213426 = 2 ⋅161106713.

It is a cyclic number.

It is not a de Polignac number, because 624312223 - 2²⁹ = 87441311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624312229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51586 + ... + 62527.

It is an arithmetic number, because the mean of its divisors is an integer number (156107952).

Almost surely, 2^624312223 is an apocalyptic number.

624312223 is a deficient number, since it is larger than the sum of its proper divisors (119585).

624312223 is a wasteful number, since it uses less digits than its factorization.

624312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119584.

The product of its digits is 3456, while the sum is 25.

The square root of 624312223 is about 24986.2406736188. The cubic root of 624312223 is about 854.6742363265.

Adding to 624312223 its reverse (322213426), we get a palindrome (946525649).

The spelling of 624312223 in words is "six hundred twenty-four million, three hundred twelve thousand, two hundred twenty-three".