23040539 has 4 divisors (see below), whose sum is σ = 23182056. Its totient is φ = 22899024.

The previous prime is 23040497. The next prime is 23040541. The reversal of 23040539 is 93504032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23040539 - 2¹⁶ = 22975003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23040439) 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, 70514 + ... + 70839.

It is an arithmetic number, because the mean of its divisors is an integer number (5795514).

Almost surely, 2^23040539 is an apocalyptic number.

23040539 is a deficient number, since it is larger than the sum of its proper divisors (141517).

23040539 is a wasteful number, since it uses less digits than its factorization.

23040539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141516.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 23040539 is about 4800.0561455050. The cubic root of 23040539 is about 284.5536832834.

The spelling of 23040539 in words is "twenty-three million, forty thousand, five hundred thirty-nine".