131444441 has 2 divisors, whose sum is σ = 131444442. Its totient is φ = 131444440.

The previous prime is 131444407. The next prime is 131444473. The reversal of 131444441 is 144444131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123121216 + 8323225 = 11096^2 + 2885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131444441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131444441.

It is not a weakly prime, because it can be changed into another prime (131444041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65722220 + 65722221.

It is an arithmetic number, because the mean of its divisors is an integer number (65722221).

Almost surely, 2^131444441 is an apocalyptic number.

It is an amenable number.

131444441 is a deficient number, since it is larger than the sum of its proper divisors (1).

131444441 is an equidigital number, since it uses as much as digits as its factorization.

131444441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 26.

The square root of 131444441 is about 11464.9221977299. The cubic root of 131444441 is about 508.4490121996.

Adding to 131444441 its reverse (144444131), we get a palindrome (275888572).

The spelling of 131444441 in words is "one hundred thirty-one million, four hundred forty-four thousand, four hundred forty-one".