131144019 has 4 divisors (see below), whose sum is σ = 174858696. Its totient is φ = 87429344.

The previous prime is 131144017. The next prime is 131144047. The reversal of 131144019 is 910441131.

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

It is a cyclic number.

It is not a de Polignac number, because 131144019 - 2¹ = 131144017 is a prime.

It is a super-2 number, since 2×131144019² = 34397507438944722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131144019.

It is not an unprimeable number, because it can be changed into a prime (131144011) 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, 21857334 + ... + 21857339.

It is an arithmetic number, because the mean of its divisors is an integer number (43714674).

Almost surely, 2^131144019 is an apocalyptic number.

131144019 is a deficient number, since it is larger than the sum of its proper divisors (43714677).

131144019 is an equidigital number, since it uses as much as digits as its factorization.

131144019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43714676.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 131144019 is about 11451.8129132465. The cubic root of 131144019 is about 508.0613559202.

The spelling of 131144019 in words is "one hundred thirty-one million, one hundred forty-four thousand, nineteen".