26271631 has 2 divisors, whose sum is σ = 26271632. Its totient is φ = 26271630.

The previous prime is 26271629. The next prime is 26271649. The reversal of 26271631 is 13617262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26271631 - 2¹ = 26271629 is a prime.

It is a super-2 number, since 2×26271631² = 1380397190800322, which contains 22 as substring.

Together with 26271629, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26271631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26271671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13135815 + 13135816.

It is an arithmetic number, because the mean of its divisors is an integer number (13135816).

Almost surely, 2^26271631 is an apocalyptic number.

26271631 is a deficient number, since it is larger than the sum of its proper divisors (1).

26271631 is an equidigital number, since it uses as much as digits as its factorization.

26271631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 26271631 is about 5125.5859177269. The cubic root of 26271631 is about 297.2777088607.

Adding to 26271631 its reverse (13617262), we get a palindrome (39888893).

The spelling of 26271631 in words is "twenty-six million, two hundred seventy-one thousand, six hundred thirty-one".