131440151 has 4 divisors (see below), whose sum is σ = 135972600. Its totient is φ = 126907704.

The previous prime is 131440139. The next prime is 131440163. The reversal of 131440151 is 151044131.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (131440139) and next prime (131440163).

It is a cyclic number.

It is not a de Polignac number, because 131440151 - 2¹⁴ = 131423767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131440171) 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, 2266181 + ... + 2266238.

It is an arithmetic number, because the mean of its divisors is an integer number (33993150).

Almost surely, 2^131440151 is an apocalyptic number.

131440151 is a deficient number, since it is larger than the sum of its proper divisors (4532449).

131440151 is an equidigital number, since it uses as much as digits as its factorization.

131440151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532448.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 131440151 is about 11464.7351037867. The cubic root of 131440151 is about 508.4434806610.

Adding to 131440151 its reverse (151044131), we get a palindrome (282484282).

The spelling of 131440151 in words is "one hundred thirty-one million, four hundred forty thousand, one hundred fifty-one".