23143451 has 4 divisors (see below), whose sum is σ = 24149712. Its totient is φ = 22137192.

The previous prime is 23143429. The next prime is 23143459. The reversal of 23143451 is 15434132.

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

It is a cyclic number.

It is not a de Polignac number, because 23143451 - 2¹⁴ = 23127067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1006237 = 23143451 / (2 + 3 + 1 + 4 + 3 + 4 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23143459) 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, 503096 + ... + 503141.

It is an arithmetic number, because the mean of its divisors is an integer number (6037428).

Almost surely, 2^23143451 is an apocalyptic number.

23143451 is a deficient number, since it is larger than the sum of its proper divisors (1006261).

23143451 is a wasteful number, since it uses less digits than its factorization.

23143451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006260.

The product of its digits is 1440, while the sum is 23.

The square root of 23143451 is about 4810.7640765267. The cubic root of 23143451 is about 284.9767129839.

Adding to 23143451 its reverse (15434132), we get a palindrome (38577583).

The spelling of 23143451 in words is "twenty-three million, one hundred forty-three thousand, four hundred fifty-one".