23381451 has 6 divisors (see below), whose sum is σ = 33773220. Its totient is φ = 15587628.

The previous prime is 23381441. The next prime is 23381461. The reversal of 23381451 is 15418332.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23381441) and next prime (23381461).

It is not a de Polignac number, because 23381451 - 2⁶ = 23381387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23381401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1298961 + ... + 1298978.

It is an arithmetic number, because the mean of its divisors is an integer number (5628870).

Almost surely, 2^23381451 is an apocalyptic number.

23381451 is a deficient number, since it is larger than the sum of its proper divisors (10391769).

23381451 is a wasteful number, since it uses less digits than its factorization.

23381451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597945 (or 2597942 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 23381451 is about 4835.4370019679. The cubic root of 23381451 is about 285.9502537893.

Adding to 23381451 its reverse (15418332), we get a palindrome (38799783).

It can be divided in two parts, 23381 and 451, that added together give a palindrome (23832).

The spelling of 23381451 in words is "twenty-three million, three hundred eighty-one thousand, four hundred fifty-one".