23151263 has 4 divisors (see below), whose sum is σ = 24513120. Its totient is φ = 21789408.

The previous prime is 23151257. The next prime is 23151277. The reversal of 23151263 is 36215132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23151263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23151283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680903 + ... + 680936.

It is an arithmetic number, because the mean of its divisors is an integer number (6128280).

Almost surely, 2^23151263 is an apocalyptic number.

23151263 is a deficient number, since it is larger than the sum of its proper divisors (1361857).

23151263 is a wasteful number, since it uses less digits than its factorization.

23151263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361856.

The product of its digits is 1080, while the sum is 23.

The square root of 23151263 is about 4811.5759372580. The cubic root of 23151263 is about 285.0087737116.

Adding to 23151263 its reverse (36215132), we get a palindrome (59366395).

The spelling of 23151263 in words is "twenty-three million, one hundred fifty-one thousand, two hundred sixty-three".