23071503 has 24 divisors (see below), whose sum is σ = 38540208. Its totient is φ = 12168576.

The previous prime is 23071469. The next prime is 23071511. The reversal of 23071503 is 30517032.

It is a happy number.

It is not a de Polignac number, because 23071503 - 2⁶ = 23071439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 23071503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23071523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4126 + ... + 7947.

It is an arithmetic number, because the mean of its divisors is an integer number (1605842).

Almost surely, 2^23071503 is an apocalyptic number.

23071503 is a deficient number, since it is larger than the sum of its proper divisors (15468705).

23071503 is a wasteful number, since it uses less digits than its factorization.

23071503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12103 (or 12096 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 23071503 is about 4803.2804415316. The cubic root of 23071503 is about 284.6810960466.

Adding to 23071503 its reverse (30517032), we get a palindrome (53588535).

The spelling of 23071503 in words is "twenty-three million, seventy-one thousand, five hundred three".