131142044 has 24 divisors (see below), whose sum is σ = 261249408. Its totient is φ = 57017840.

The previous prime is 131142043. The next prime is 131142103. The reversal of 131142044 is 440241131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131142043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63782 + ... + 65805.

It is an arithmetic number, because the mean of its divisors is an integer number (10885392).

Almost surely, 2^131142044 is an apocalyptic number.

It is an amenable number.

131142044 is a deficient number, since it is larger than the sum of its proper divisors (130107364).

131142044 is a wasteful number, since it uses less digits than its factorization.

131142044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129625 (or 129623 counting only the distinct ones).

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

The square root of 131142044 is about 11451.7266820336. The cubic root of 131142044 is about 508.0588054768.

Adding to 131142044 its reverse (440241131), we get a palindrome (571383175).

The spelling of 131142044 in words is "one hundred thirty-one million, one hundred forty-two thousand, forty-four".