23434321 has 4 divisors (see below), whose sum is σ = 23876532. Its totient is φ = 22992112.

The previous prime is 23434297. The next prime is 23434337. The reversal of 23434321 is 12343432.

It is a happy number.

23434321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10653696 + 12780625 = 3264^2 + 3575^2 .

It is a cyclic number.

It is not a de Polignac number, because 23434321 - 2⁵ = 23434289 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23434292 and 23434301.

It is not an unprimeable number, because it can be changed into a prime (23434351) 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 in 3 ways as a sum of consecutive naturals, for example, 221026 + ... + 221131.

It is an arithmetic number, because the mean of its divisors is an integer number (5969133).

Almost surely, 2^23434321 is an apocalyptic number.

It is an amenable number.

23434321 is a deficient number, since it is larger than the sum of its proper divisors (442211).

23434321 is an equidigital number, since it uses as much as digits as its factorization.

23434321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442210.

The product of its digits is 1728, while the sum is 22.

The square root of 23434321 is about 4840.9008459170. The cubic root of 23434321 is about 286.1656212210.

Adding to 23434321 its reverse (12343432), we get a palindrome (35777753).

The spelling of 23434321 in words is "twenty-three million, four hundred thirty-four thousand, three hundred twenty-one".