23163145 has 4 divisors (see below), whose sum is σ = 27795780. Its totient is φ = 18530512.

The previous prime is 23163131. The next prime is 23163157. The reversal of 23163145 is 54136132.

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 7733961 + 15429184 = 2781^2 + 3928^2 .

It is a cyclic number.

It is not a de Polignac number, because 23163145 - 2¹³ = 23154953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2316310 + ... + 2316319.

It is an arithmetic number, because the mean of its divisors is an integer number (6948945).

Almost surely, 2^23163145 is an apocalyptic number.

It is an amenable number.

23163145 is a deficient number, since it is larger than the sum of its proper divisors (4632635).

23163145 is an equidigital number, since it uses as much as digits as its factorization.

23163145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4632634.

The product of its digits is 2160, while the sum is 25.

The square root of 23163145 is about 4812.8105094633. The cubic root of 23163145 is about 285.0575240406.

Adding to 23163145 its reverse (54136132), we get a palindrome (77299277).

The spelling of 23163145 in words is "twenty-three million, one hundred sixty-three thousand, one hundred forty-five".