131601842 has 8 divisors (see below), whose sum is σ = 198493932. Its totient is φ = 65437200.

The previous prime is 131601803. The next prime is 131601863. The reversal of 131601842 is 248106131.

It can be written as a sum of positive squares in 2 ways, for example, as 126810121 + 4791721 = 11261^2 + 2189^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181409 + ... + 182132.

Almost surely, 2^131601842 is an apocalyptic number.

131601842 is a deficient number, since it is larger than the sum of its proper divisors (66892090).

131601842 is a wasteful number, since it uses less digits than its factorization.

131601842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363724.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 131601842 is about 11471.7846039751. The cubic root of 131601842 is about 508.6518823474.

Adding to 131601842 its reverse (248106131), we get a palindrome (379707973).

The spelling of 131601842 in words is "one hundred thirty-one million, six hundred one thousand, eight hundred forty-two".