26351231 has 2 divisors, whose sum is σ = 26351232. Its totient is φ = 26351230.

The previous prime is 26351201. The next prime is 26351239. The reversal of 26351231 is 13215362.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26351231 is a prime.

It is a super-2 number, since 2×26351231² = 1388774750430722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26351197 and 26351206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26351239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13175615 + 13175616.

It is an arithmetic number, because the mean of its divisors is an integer number (13175616).

Almost surely, 2^26351231 is an apocalyptic number.

26351231 is a deficient number, since it is larger than the sum of its proper divisors (1).

26351231 is an equidigital number, since it uses as much as digits as its factorization.

26351231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 26351231 is about 5133.3450108092. The cubic root of 26351231 is about 297.5776451526.

Adding to 26351231 its reverse (13215362), we get a palindrome (39566593).

The spelling of 26351231 in words is "twenty-six million, three hundred fifty-one thousand, two hundred thirty-one".