131218862 has 4 divisors (see below), whose sum is σ = 196828296. Its totient is φ = 65609430.

The previous prime is 131218847. The next prime is 131218889. The reversal of 131218862 is 268812131.

131218862 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 congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32804714 + ... + 32804717.

It is an arithmetic number, because the mean of its divisors is an integer number (49207074).

Almost surely, 2^131218862 is an apocalyptic number.

131218862 is a deficient number, since it is larger than the sum of its proper divisors (65609434).

131218862 is an equidigital number, since it uses as much as digits as its factorization.

131218862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65609433.

The product of its digits is 4608, while the sum is 32.

The square root of 131218862 is about 11455.0801830454. The cubic root of 131218862 is about 508.1579865943.

The spelling of 131218862 in words is "one hundred thirty-one million, two hundred eighteen thousand, eight hundred sixty-two".