131144331 has 8 divisors (see below), whose sum is σ = 176463760. Its totient is φ = 86627232.

The previous prime is 131144329. The next prime is 131144339. The reversal of 131144331 is 133441131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131144331 - 2¹ = 131144329 is a prime.

It is a super-2 number, since 2×131144331² = 34397671106875122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131144298 and 131144307.

It is not an unprimeable number, because it can be changed into a prime (131144339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200200 + ... + 200853.

It is an arithmetic number, because the mean of its divisors is an integer number (22057970).

Almost surely, 2^131144331 is an apocalyptic number.

131144331 is a deficient number, since it is larger than the sum of its proper divisors (45319429).

131144331 is a wasteful number, since it uses less digits than its factorization.

131144331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401165.

The product of its digits is 432, while the sum is 21.

The square root of 131144331 is about 11451.8265355357. The cubic root of 131144331 is about 508.0617588234.

Adding to 131144331 its reverse (133441131), we get a palindrome (264585462).

The spelling of 131144331 in words is "one hundred thirty-one million, one hundred forty-four thousand, three hundred thirty-one".