23281061 has 4 divisors (see below), whose sum is σ = 24506400. Its totient is φ = 22055724.

The previous prime is 23281057. The next prime is 23281073. The reversal of 23281061 is 16018232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23281061 - 2² = 23281057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23281091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612641 + ... + 612678.

It is an arithmetic number, because the mean of its divisors is an integer number (6126600).

Almost surely, 2^23281061 is an apocalyptic number.

It is an amenable number.

23281061 is a deficient number, since it is larger than the sum of its proper divisors (1225339).

23281061 is a wasteful number, since it uses less digits than its factorization.

23281061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225338.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 23281061 is about 4825.0451811356. The cubic root of 23281061 is about 285.5404171083.

Adding to 23281061 its reverse (16018232), we get a palindrome (39299293).

The spelling of 23281061 in words is "twenty-three million, two hundred eighty-one thousand, sixty-one".