623343451 has 4 divisors (see below), whose sum is σ = 630347400. Its totient is φ = 616339504.

The previous prime is 623343449. The next prime is 623343467. The reversal of 623343451 is 154343326.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154343326 = 2 ⋅77171663.

It is a cyclic number.

It is not a de Polignac number, because 623343451 - 2¹ = 623343449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623343481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3501841 + ... + 3502018.

It is an arithmetic number, because the mean of its divisors is an integer number (157586850).

Almost surely, 2^623343451 is an apocalyptic number.

623343451 is a deficient number, since it is larger than the sum of its proper divisors (7003949).

623343451 is an equidigital number, since it uses as much as digits as its factorization.

623343451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7003948.

The product of its digits is 25920, while the sum is 31.

The square root of 623343451 is about 24966.8470376217. The cubic root of 623343451 is about 854.2319292664.

Adding to 623343451 its reverse (154343326), we get a palindrome (777686777).

The spelling of 623343451 in words is "six hundred twenty-three million, three hundred forty-three thousand, four hundred fifty-one".