131741561 has 8 divisors (see below), whose sum is σ = 150924480. Its totient is φ = 112649328.

The previous prime is 131741543. The next prime is 131741563. The reversal of 131741561 is 165147131.

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 131741561 - 2¹⁰ = 131740537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131741563) 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, 19526 + ... + 25391.

It is an arithmetic number, because the mean of its divisors is an integer number (18865560).

Almost surely, 2^131741561 is an apocalyptic number.

It is an amenable number.

131741561 is a deficient number, since it is larger than the sum of its proper divisors (19182919).

131741561 is an equidigital number, since it uses as much as digits as its factorization.

131741561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45343.

The product of its digits is 2520, while the sum is 29.

The square root of 131741561 is about 11477.8726687483. The cubic root of 131741561 is about 508.8318271351.

Adding to 131741561 its reverse (165147131), we get a palindrome (296888692).

The spelling of 131741561 in words is "one hundred thirty-one million, seven hundred forty-one thousand, five hundred sixty-one".