26312131 has 4 divisors (see below), whose sum is σ = 27697000. Its totient is φ = 24927264.

The previous prime is 26312129. The next prime is 26312159. The reversal of 26312131 is 13121362.

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 26312131 - 2¹ = 26312129 is a prime.

It is a super-2 number, since 2×26312131² = 1384656475522322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1384849 = 26312131 / (2 + 6 + 3 + 1 + 2 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26312099 and 26312108.

It is not an unprimeable number, because it can be changed into a prime (26310131) 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, 692406 + ... + 692443.

It is an arithmetic number, because the mean of its divisors is an integer number (6924250).

Almost surely, 2^26312131 is an apocalyptic number.

26312131 is a deficient number, since it is larger than the sum of its proper divisors (1384869).

26312131 is a wasteful number, since it uses less digits than its factorization.

26312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384868.

The product of its digits is 216, while the sum is 19.

The square root of 26312131 is about 5129.5351641255. The cubic root of 26312131 is about 297.4303902294.

Adding to 26312131 its reverse (13121362), we get a palindrome (39433493).

The spelling of 26312131 in words is "twenty-six million, three hundred twelve thousand, one hundred thirty-one".