131045441 has 2 divisors, whose sum is σ = 131045442. Its totient is φ = 131045440.

The previous prime is 131045429. The next prime is 131045443. The reversal of 131045441 is 144540131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123121216 + 7924225 = 11096^2 + 2815^2 .

It is an emirp because it is prime and its reverse (144540131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131045441 - 2⁶ = 131045377 is a prime.

Together with 131045443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131045443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65522720 + 65522721.

It is an arithmetic number, because the mean of its divisors is an integer number (65522721).

Almost surely, 2^131045441 is an apocalyptic number.

It is an amenable number.

131045441 is a deficient number, since it is larger than the sum of its proper divisors (1).

131045441 is an equidigital number, since it uses as much as digits as its factorization.

131045441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 131045441 is about 11447.5080694446. The cubic root of 131045441 is about 507.9340245917.

Adding to 131045441 its reverse (144540131), we get a palindrome (275585572).

The spelling of 131045441 in words is "one hundred thirty-one million, forty-five thousand, four hundred forty-one".