131311814 has 4 divisors (see below), whose sum is σ = 196967724. Its totient is φ = 65655906.

The previous prime is 131311811. The next prime is 131311849. The reversal of 131311814 is 418113131.

It is a happy number.

131311814 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131311814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131311811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32827952 + ... + 32827955.

It is an arithmetic number, because the mean of its divisors is an integer number (49241931).

Almost surely, 2^131311814 is an apocalyptic number.

131311814 is a deficient number, since it is larger than the sum of its proper divisors (65655910).

131311814 is an equidigital number, since it uses as much as digits as its factorization.

131311814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65655909.

The product of its digits is 288, while the sum is 23.

The square root of 131311814 is about 11459.1367039581. The cubic root of 131311814 is about 508.2779468694.

Adding to 131311814 its reverse (418113131), we get a palindrome (549424945).

The spelling of 131311814 in words is "one hundred thirty-one million, three hundred eleven thousand, eight hundred fourteen".