131442011 has 4 divisors (see below), whose sum is σ = 139173912. Its totient is φ = 123710112.

The previous prime is 131441983. The next prime is 131442041. The reversal of 131442011 is 110244131.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131442011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 7731883 = 131442011 / (1 + 3 + 1 + 4 + 4 + 2 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131442041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3865925 + ... + 3865958.

It is an arithmetic number, because the mean of its divisors is an integer number (34793478).

Almost surely, 2^131442011 is an apocalyptic number.

131442011 is a deficient number, since it is larger than the sum of its proper divisors (7731901).

131442011 is an equidigital number, since it uses as much as digits as its factorization.

131442011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731900.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 131442011 is about 11464.8162218153. The cubic root of 131442011 is about 508.4458789653.

Adding to 131442011 its reverse (110244131), we get a palindrome (241686142).

The spelling of 131442011 in words is "one hundred thirty-one million, four hundred forty-two thousand, eleven".