26271431 has 2 divisors, whose sum is σ = 26271432. Its totient is φ = 26271430.

The previous prime is 26271397. The next prime is 26271457. The reversal of 26271431 is 13417262.

It is an a-pointer prime, because the next prime (26271457) can be obtained adding 26271431 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26271431 - 2⁶ = 26271367 is a prime.

It is a super-2 number, since 2×26271431² = 1380376173575522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26271431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26271481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13135715 + 13135716.

It is an arithmetic number, because the mean of its divisors is an integer number (13135716).

Almost surely, 2^26271431 is an apocalyptic number.

26271431 is a deficient number, since it is larger than the sum of its proper divisors (1).

26271431 is an equidigital number, since it uses as much as digits as its factorization.

26271431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 26271431 is about 5125.5664077251. The cubic root of 26271431 is about 297.2769544895.

Adding to 26271431 its reverse (13417262), we get a palindrome (39688693).

The spelling of 26271431 in words is "twenty-six million, two hundred seventy-one thousand, four hundred thirty-one".