26431223 has 16 divisors (see below), whose sum is σ = 34245120. Its totient is φ = 19810656.

The previous prime is 26431219. The next prime is 26431231. The reversal of 26431223 is 32213462.

It is a cyclic number.

It is not a de Polignac number, because 26431223 - 2² = 26431219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26431253) 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, 5915 + ... + 9372.

It is an arithmetic number, because the mean of its divisors is an integer number (2140320).

Almost surely, 2^26431223 is an apocalyptic number.

26431223 is a deficient number, since it is larger than the sum of its proper divisors (7813897).

26431223 is a wasteful number, since it uses less digits than its factorization.

26431223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15326.

The product of its digits is 1728, while the sum is 23.

The square root of 26431223 is about 5141.1305176974. The cubic root of 26431223 is about 297.8784506464.

Adding to 26431223 its reverse (32213462), we get a palindrome (58644685).

The spelling of 26431223 in words is "twenty-six million, four hundred thirty-one thousand, two hundred twenty-three".