131327819 has 4 divisors (see below), whose sum is σ = 150088944. Its totient is φ = 112566696.

The previous prime is 131327773. The next prime is 131327821. The reversal of 131327819 is 918723131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918723131 = 19 ⋅48353849.

It is a cyclic number.

It is not a de Polignac number, because 131327819 - 2¹² = 131323723 is a prime.

It is a super-2 number, since 2×131327819² = 34493992086593522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131327849) 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, 9380552 + ... + 9380565.

It is an arithmetic number, because the mean of its divisors is an integer number (37522236).

Almost surely, 2^131327819 is an apocalyptic number.

131327819 is a deficient number, since it is larger than the sum of its proper divisors (18761125).

131327819 is an equidigital number, since it uses as much as digits as its factorization.

131327819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18761124.

The product of its digits is 9072, while the sum is 35.

The square root of 131327819 is about 11459.8350337167. The cubic root of 131327819 is about 508.2985965932.

The spelling of 131327819 in words is "one hundred thirty-one million, three hundred twenty-seven thousand, eight hundred nineteen".