23151243 has 16 divisors (see below), whose sum is σ = 31781376. Its totient is φ = 14982240.

The previous prime is 23151241. The next prime is 23151257. The reversal of 23151243 is 34215132.

It is not a de Polignac number, because 23151243 - 2¹ = 23151241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23151241) 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, 24958 + ... + 25868.

It is an arithmetic number, because the mean of its divisors is an integer number (1986336).

Almost surely, 2^23151243 is an apocalyptic number.

23151243 is a deficient number, since it is larger than the sum of its proper divisors (8630133).

23151243 is a wasteful number, since it uses less digits than its factorization.

23151243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154.

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

The square root of 23151243 is about 4811.5738589364. The cubic root of 23151243 is about 285.0086916401.

Adding to 23151243 its reverse (34215132), we get a palindrome (57366375).

The spelling of 23151243 in words is "twenty-three million, one hundred fifty-one thousand, two hundred forty-three".