26013131 has 4 divisors (see below), whose sum is σ = 26057592. Its totient is φ = 25968672.

The previous prime is 26013121. The next prime is 26013133. The reversal of 26013131 is 13131062.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26013131 is a prime.

It is a super-2 number, since 2×26013131² = 1353365968846322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26013133) 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, 21341 + ... + 22526.

It is an arithmetic number, because the mean of its divisors is an integer number (6514398).

Almost surely, 2^26013131 is an apocalyptic number.

26013131 is a deficient number, since it is larger than the sum of its proper divisors (44461).

26013131 is an equidigital number, since it uses as much as digits as its factorization.

26013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44460.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 26013131 is about 5100.3069515471. The cubic root of 26013131 is about 296.2994709291.

Adding to 26013131 its reverse (13131062), we get a palindrome (39144193).

The spelling of 26013131 in words is "twenty-six million, thirteen thousand, one hundred thirty-one".