23147613 has 10 divisors (see below), whose sum is σ = 34578654. Its totient is φ = 15431688.

The previous prime is 23147611. The next prime is 23147617. The reversal of 23147613 is 31674132.

23147613 is a `hidden beast` number, since 2 + 3 + 1 + 47 + 613 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12766329 + 10381284 = 3573^2 + 3222^2 .

It is not a de Polignac number, because 23147613 - 2¹ = 23147611 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23147611) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 142806 + ... + 142967.

Almost surely, 2^23147613 is an apocalyptic number.

It is an amenable number.

23147613 is a deficient number, since it is larger than the sum of its proper divisors (11431041).

23147613 is an equidigital number, since it uses as much as digits as its factorization.

23147613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285785 (or 285776 counting only the distinct ones).

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

The square root of 23147613 is about 4811.1966286985. The cubic root of 23147613 is about 284.9937948788.

The spelling of 23147613 in words is "twenty-three million, one hundred forty-seven thousand, six hundred thirteen".