26309131 has 2 divisors, whose sum is σ = 26309132. Its totient is φ = 26309130.

The previous prime is 26309113. The next prime is 26309161. The reversal of 26309131 is 13190362.

Together with previous prime (26309113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26309131 - 2⁵ = 26309099 is a prime.

It is a super-2 number, since 2×26309131² = 1384340747950322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26309096 and 26309105.

It is not a weakly prime, because it can be changed into another prime (26309161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13154565 + 13154566.

It is an arithmetic number, because the mean of its divisors is an integer number (13154566).

Almost surely, 2^26309131 is an apocalyptic number.

26309131 is a deficient number, since it is larger than the sum of its proper divisors (1).

26309131 is an equidigital number, since it uses as much as digits as its factorization.

26309131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 26309131 is about 5129.2427316320. The cubic root of 26309131 is about 297.4190858734.

Adding to 26309131 its reverse (13190362), we get a palindrome (39499493).

The spelling of 26309131 in words is "twenty-six million, three hundred nine thousand, one hundred thirty-one".