131297219 has 4 divisors (see below), whose sum is σ = 132022800. Its totient is φ = 130571640.

The previous prime is 131297213. The next prime is 131297233. The reversal of 131297219 is 912792131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912792131 = 151 ⋅6044981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131297219 is a prime.

It is a super-2 number, since 2×131297219² = 34477919434267922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131297213) 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, 362519 + ... + 362880.

It is an arithmetic number, because the mean of its divisors is an integer number (33005700).

Almost surely, 2^131297219 is an apocalyptic number.

131297219 is a deficient number, since it is larger than the sum of its proper divisors (725581).

131297219 is an equidigital number, since it uses as much as digits as its factorization.

131297219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725580.

The product of its digits is 6804, while the sum is 35.

The square root of 131297219 is about 11458.4998581839. The cubic root of 131297219 is about 508.2591148713.

The spelling of 131297219 in words is "one hundred thirty-one million, two hundred ninety-seven thousand, two hundred nineteen".