23403451 has 2 divisors, whose sum is σ = 23403452. Its totient is φ = 23403450.

The previous prime is 23403439. The next prime is 23403467. The reversal of 23403451 is 15430432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23403451 - 2¹⁹ = 22879163 is a prime.

It is not a weakly prime, because it can be changed into another prime (23403431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11701725 + 11701726.

It is an arithmetic number, because the mean of its divisors is an integer number (11701726).

Almost surely, 2^23403451 is an apocalyptic number.

23403451 is a deficient number, since it is larger than the sum of its proper divisors (1).

23403451 is an equidigital number, since it uses as much as digits as its factorization.

23403451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 23403451 is about 4837.7113390528. The cubic root of 23403451 is about 286.0399108076.

Adding to 23403451 its reverse (15430432), we get a palindrome (38833883).

The spelling of 23403451 in words is "twenty-three million, four hundred three thousand, four hundred fifty-one".