23178481 has 2 divisors, whose sum is σ = 23178482. Its totient is φ = 23178480.

The previous prime is 23178479. The next prime is 23178487. The reversal of 23178481 is 18487132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14861025 + 8317456 = 3855^2 + 2884^2 .

It is a cyclic number.

It is not a de Polignac number, because 23178481 - 2¹ = 23178479 is a prime.

It is a super-2 number, since 2×23178481² = 1074483962934722, which contains 22 as substring.

Together with 23178479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23178487) 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 as a sum of consecutive naturals, namely, 11589240 + 11589241.

It is an arithmetic number, because the mean of its divisors is an integer number (11589241).

Almost surely, 2^23178481 is an apocalyptic number.

It is an amenable number.

23178481 is a deficient number, since it is larger than the sum of its proper divisors (1).

23178481 is an equidigital number, since it uses as much as digits as its factorization.

23178481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 34.

The square root of 23178481 is about 4814.4034936843. The cubic root of 23178481 is about 285.1204210514.

The spelling of 23178481 in words is "twenty-three million, one hundred seventy-eight thousand, four hundred eighty-one".