23130387 has 64 divisors (see below), whose sum is σ = 43407360. Its totient is φ = 11860992.

The previous prime is 23130379. The next prime is 23130389. The reversal of 23130387 is 78303132.

It is not a de Polignac number, because 23130387 - 2³ = 23130379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 23130387.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23130389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73743 + ... + 74055.

It is an arithmetic number, because the mean of its divisors is an integer number (678240).

Almost surely, 2^23130387 is an apocalyptic number.

23130387 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

23130387 is a deficient number, since it is larger than the sum of its proper divisors (20276973).

23130387 is a wasteful number, since it uses less digits than its factorization.

23130387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 23130387 is about 4809.4060963907. The cubic root of 23130387 is about 284.9230817356.

The spelling of 23130387 in words is "twenty-three million, one hundred thirty thousand, three hundred eighty-seven".