23142513 has 16 divisors (see below), whose sum is σ = 32777280. Its totient is φ = 14482944.

The previous prime is 23142499. The next prime is 23142517. The reversal of 23142513 is 31524132.

It is not a de Polignac number, because 23142513 - 2⁵ = 23142481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23142513.

It is not an unprimeable number, because it can be changed into a prime (23142517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4645 + ... + 8237.

It is an arithmetic number, because the mean of its divisors is an integer number (2048580).

Almost surely, 2^23142513 is an apocalyptic number.

It is an amenable number.

23142513 is a deficient number, since it is larger than the sum of its proper divisors (9634767).

23142513 is a wasteful number, since it uses less digits than its factorization.

23142513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728.

The product of its digits is 720, while the sum is 21.

The square root of 23142513 is about 4810.6665858278. Note that the first 3 decimals coincide. The cubic root of 23142513 is about 284.9728629132.

Adding to 23142513 its reverse (31524132), we get a palindrome (54666645).

The spelling of 23142513 in words is "twenty-three million, one hundred forty-two thousand, five hundred thirteen".