26343631 has 2 divisors, whose sum is σ = 26343632. Its totient is φ = 26343630.

The previous prime is 26343617. The next prime is 26343637. The reversal of 26343631 is 13634362.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26343631 is a prime.

It is a super-2 number, since 2×26343631² = 1387973788528322, 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 26343631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26343637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13171815 + 13171816.

It is an arithmetic number, because the mean of its divisors is an integer number (13171816).

Almost surely, 2^26343631 is an apocalyptic number.

26343631 is a deficient number, since it is larger than the sum of its proper divisors (1).

26343631 is an equidigital number, since it uses as much as digits as its factorization.

26343631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 28.

The square root of 26343631 is about 5132.6046993705. The cubic root of 26343631 is about 297.5490341228.

Adding to 26343631 its reverse (13634362), we get a palindrome (39977993).

The spelling of 26343631 in words is "twenty-six million, three hundred forty-three thousand, six hundred thirty-one".