131241566 has 4 divisors (see below), whose sum is σ = 196862352. Its totient is φ = 65620782.

The previous prime is 131241563. The next prime is 131241571. The reversal of 131241566 is 665142131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×131241566² = 34448697292264712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131241563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32810390 + ... + 32810393.

It is an arithmetic number, because the mean of its divisors is an integer number (49215588).

Almost surely, 2^131241566 is an apocalyptic number.

131241566 is a deficient number, since it is larger than the sum of its proper divisors (65620786).

131241566 is an equidigital number, since it uses as much as digits as its factorization.

131241566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65620785.

The product of its digits is 4320, while the sum is 29.

The square root of 131241566 is about 11456.0711415389. The cubic root of 131241566 is about 508.1872927306.

Adding to 131241566 its reverse (665142131), we get a palindrome (796383697).

The spelling of 131241566 in words is "one hundred thirty-one million, two hundred forty-one thousand, five hundred sixty-six".