23151043 has 4 divisors (see below), whose sum is σ = 23289840. Its totient is φ = 23012248.

The previous prime is 23151031. The next prime is 23151047. The reversal of 23151043 is 34015132.

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-23151043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23151043.

It is not an unprimeable number, because it can be changed into a prime (23151047) 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, 69148 + ... + 69481.

It is an arithmetic number, because the mean of its divisors is an integer number (5822460).

Almost surely, 2^23151043 is an apocalyptic number.

23151043 is a deficient number, since it is larger than the sum of its proper divisors (138797).

23151043 is a wasteful number, since it uses less digits than its factorization.

23151043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138796.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 23151043 is about 4811.5530756711. The cubic root of 23151043 is about 285.0078709225.

Adding to 23151043 its reverse (34015132), we get a palindrome (57166175).

The spelling of 23151043 in words is "twenty-three million, one hundred fifty-one thousand, forty-three".