131400044 has 24 divisors (see below), whose sum is σ = 238820400. Its totient is φ = 63183680.

The previous prime is 131400037. The next prime is 131400047. The reversal of 131400044 is 440004131.

It is a junction number, because it is equal to n+sod(n) for n = 131399995 and 131400031.

It is not an unprimeable number, because it can be changed into a prime (131400047) 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, 29099 + ... + 33309.

It is an arithmetic number, because the mean of its divisors is an integer number (9950850).

Almost surely, 2^131400044 is an apocalyptic number.

It is an amenable number.

131400044 is a deficient number, since it is larger than the sum of its proper divisors (107420356).

131400044 is a wasteful number, since it uses less digits than its factorization.

131400044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513 (or 4511 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 131400044 is about 11462.9858239466. The cubic root of 131400044 is about 508.3917607541.

Adding to 131400044 its reverse (440004131), we get a palindrome (571404175).

The spelling of 131400044 in words is "one hundred thirty-one million, four hundred thousand, forty-four".