23130545 has 8 divisors (see below), whose sum is σ = 28713960. Its totient is φ = 17866240.

The previous prime is 23130521. The next prime is 23130553. The reversal of 23130545 is 54503132.

It can be written as a sum of positive squares in 4 ways, for example, as 167281 + 22963264 = 409^2 + 4792^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23130545 - 2¹⁰ = 23129521 is a prime.

It is a super-2 number, since 2×23130545² = 1070044223994050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23130545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79616 + ... + 79905.

It is an arithmetic number, because the mean of its divisors is an integer number (3589245).

Almost surely, 2^23130545 is an apocalyptic number.

It is an amenable number.

23130545 is a deficient number, since it is larger than the sum of its proper divisors (5583415).

23130545 is a wasteful number, since it uses less digits than its factorization.

23130545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159555.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 23130545 is about 4809.4225225073. The cubic root of 23130545 is about 284.9237304889.

Adding to 23130545 its reverse (54503132), we get a palindrome (77633677).

The spelling of 23130545 in words is "twenty-three million, one hundred thirty thousand, five hundred forty-five".