131444311 has 8 divisors (see below), whose sum is σ = 133567040. Its totient is φ = 129330432.

The previous prime is 131444297. The next prime is 131444321. The reversal of 131444311 is 113444131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 131444311 - 2¹⁷ = 131313239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131444321) 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, 31855 + ... + 35743.

It is an arithmetic number, because the mean of its divisors is an integer number (16695880).

Almost surely, 2^131444311 is an apocalyptic number.

131444311 is a deficient number, since it is larger than the sum of its proper divisors (2122729).

131444311 is an equidigital number, since it uses as much as digits as its factorization.

131444311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425.

The product of its digits is 576, while the sum is 22.

The square root of 131444311 is about 11464.9165282613. The cubic root of 131444311 is about 508.4488445790.

Adding to 131444311 its reverse (113444131), we get a palindrome (244888442).

The spelling of 131444311 in words is "one hundred thirty-one million, four hundred forty-four thousand, three hundred eleven".