26311000831 has 4 divisors (see below), whose sum is σ = 26330165352. Its totient is φ = 26291836312.

The previous prime is 26311000817. The next prime is 26311000841. The reversal of 26311000831 is 13800011362.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26311000831 - 2¹¹ = 26310998783 is a prime.

It is a super-2 number, since 2×26311000831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26311000796 and 26311000805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26311000841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9580201 + ... + 9582946.

It is an arithmetic number, because the mean of its divisors is an integer number (6582541338).

Almost surely, 2^26311000831 is an apocalyptic number.

26311000831 is the 102589-th centered pentagonal number.

26311000831 is a deficient number, since it is larger than the sum of its proper divisors (19164521).

26311000831 is a wasteful number, since it uses less digits than its factorization.

26311000831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19164520.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 26311000831 in words is "twenty-six billion, three hundred eleven million, eight hundred thirty-one", and thus it is an aban number.