23451427 has 4 divisors (see below), whose sum is σ = 23531760. Its totient is φ = 23371096.

The previous prime is 23451409. The next prime is 23451433. The reversal of 23451427 is 72415432.

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-23451427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23451395 and 23451404.

It is not an unprimeable number, because it can be changed into a prime (23451457) 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, 39727 + ... + 40312.

It is an arithmetic number, because the mean of its divisors is an integer number (5882940).

Almost surely, 2^23451427 is an apocalyptic number.

23451427 is a deficient number, since it is larger than the sum of its proper divisors (80333).

23451427 is an equidigital number, since it uses as much as digits as its factorization.

23451427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80332.

The product of its digits is 6720, while the sum is 28.

The square root of 23451427 is about 4842.6673435205. The cubic root of 23451427 is about 286.2352336287.

Adding to 23451427 its reverse (72415432), we get a palindrome (95866859).

The spelling of 23451427 in words is "twenty-three million, four hundred fifty-one thousand, four hundred twenty-seven".