23387013 has 12 divisors (see below), whose sum is σ = 36379980. Its totient is φ = 14391936.

The previous prime is 23387011. The next prime is 23387017. The reversal of 23387013 is 31078332.

It can be written as a sum of positive squares in 2 ways, for example, as 5008644 + 18378369 = 2238^2 + 4287^2 .

It is not a de Polignac number, because 23387013 - 2¹ = 23387011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23387011) 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 11 ways as a sum of consecutive naturals, for example, 99828 + ... + 100061.

It is an arithmetic number, because the mean of its divisors is an integer number (3031665).

Almost surely, 2^23387013 is an apocalyptic number.

It is an amenable number.

23387013 is a deficient number, since it is larger than the sum of its proper divisors (12992967).

23387013 is a wasteful number, since it uses less digits than its factorization.

23387013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199908 (or 199905 counting only the distinct ones).

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

The square root of 23387013 is about 4836.0120967591. The cubic root of 23387013 is about 285.9729260237.

The spelling of 23387013 in words is "twenty-three million, three hundred eighty-seven thousand, thirteen".