23503147 has 2 divisors, whose sum is σ = 23503148. Its totient is φ = 23503146.

The previous prime is 23503087. The next prime is 23503157. The reversal of 23503147 is 74130532.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23503147 is a prime.

It is not a weakly prime, because it can be changed into another prime (23503157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11751573 + 11751574.

It is an arithmetic number, because the mean of its divisors is an integer number (11751574).

Almost surely, 2^23503147 is an apocalyptic number.

23503147 is a deficient number, since it is larger than the sum of its proper divisors (1).

23503147 is an equidigital number, since it uses as much as digits as its factorization.

23503147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 23503147 is about 4848.0044348165. The cubic root of 23503147 is about 286.4455010973.

Adding to 23503147 its reverse (74130532), we get a palindrome (97633679).

The spelling of 23503147 in words is "twenty-three million, five hundred three thousand, one hundred forty-seven".