23130511 has 4 divisors (see below), whose sum is σ = 23346792. Its totient is φ = 22914232.

The previous prime is 23130509. The next prime is 23130521. The reversal of 23130511 is 11503132.

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 23130511 - 2¹ = 23130509 is a prime.

It is a super-2 number, since 2×23130511² = 1070041078242242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130521) 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 in 3 ways as a sum of consecutive naturals, for example, 107980 + ... + 108193.

It is an arithmetic number, because the mean of its divisors is an integer number (5836698).

Almost surely, 2^23130511 is an apocalyptic number.

23130511 is a deficient number, since it is larger than the sum of its proper divisors (216281).

23130511 is a wasteful number, since it uses less digits than its factorization.

23130511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216280.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 23130511 is about 4809.4189877780. The cubic root of 23130511 is about 284.9235908840.

Adding to 23130511 its reverse (11503132), we get a palindrome (34633643).

The spelling of 23130511 in words is "twenty-three million, one hundred thirty thousand, five hundred eleven".