26105231 has 4 divisors (see below), whose sum is σ = 26310912. Its totient is φ = 25899552.

The previous prime is 26105179. The next prime is 26105269. The reversal of 26105231 is 13250162.

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-26105231 is a prime.

It is a super-2 number, since 2×26105231² = 1362966171126722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26105281) 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, 102650 + ... + 102903.

It is an arithmetic number, because the mean of its divisors is an integer number (6577728).

Almost surely, 2^26105231 is an apocalyptic number.

26105231 is a deficient number, since it is larger than the sum of its proper divisors (205681).

26105231 is a wasteful number, since it uses less digits than its factorization.

26105231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205680.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 26105231 is about 5109.3278422900. The cubic root of 26105231 is about 296.6487437446.

Adding to 26105231 its reverse (13250162), we get a palindrome (39355393).

The spelling of 26105231 in words is "twenty-six million, one hundred five thousand, two hundred thirty-one".