23045381 has 2 divisors, whose sum is σ = 23045382. Its totient is φ = 23045380.

The previous prime is 23045359. The next prime is 23045437. The reversal of 23045381 is 18354032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22714756 + 330625 = 4766^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 23045381 - 2¹⁴ = 23028997 is a prime.

It is a super-2 number, since 2×23045381² = 1062179170870322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 23045381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23015381) 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, 11522690 + 11522691.

It is an arithmetic number, because the mean of its divisors is an integer number (11522691).

Almost surely, 2^23045381 is an apocalyptic number.

It is an amenable number.

23045381 is a deficient number, since it is larger than the sum of its proper divisors (1).

23045381 is an equidigital number, since it uses as much as digits as its factorization.

23045381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 23045381 is about 4800.5604881097. The cubic root of 23045381 is about 284.5736149993.

It can be divided in two parts, 23045 and 381, that multiplied together give a triangular number (8780145 = T₄₁₉₀).

The spelling of 23045381 in words is "twenty-three million, forty-five thousand, three hundred eighty-one".