131440412 has 24 divisors (see below), whose sum is σ = 238400400. Its totient is φ = 63334656.

The previous prime is 131440409. The next prime is 131440427. The reversal of 131440412 is 214044131.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 116483 + ... + 117605.

It is an arithmetic number, because the mean of its divisors is an integer number (9933350).

Almost surely, 2^131440412 is an apocalyptic number.

It is an amenable number.

131440412 is a deficient number, since it is larger than the sum of its proper divisors (106959988).

131440412 is a wasteful number, since it uses less digits than its factorization.

131440412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 131440412 is about 11464.7464865125. The cubic root of 131440412 is about 508.4438171986.

Adding to 131440412 its reverse (214044131), we get a palindrome (345484543).

The spelling of 131440412 in words is "one hundred thirty-one million, four hundred forty thousand, four hundred twelve".