131820056 has 16 divisors (see below), whose sum is σ = 248681400. Its totient is φ = 65505024.

The previous prime is 131820053. The next prime is 131820067. The reversal of 131820056 is 650028131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131820053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49241 + ... + 51848.

Almost surely, 2^131820056 is an apocalyptic number.

It is an amenable number.

131820056 is a deficient number, since it is larger than the sum of its proper divisors (116861344).

131820056 is a wasteful number, since it uses less digits than its factorization.

131820056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101258 (or 101254 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 131820056 is about 11481.2915649765. The cubic root of 131820056 is about 508.9328654205.

Adding to 131820056 its reverse (650028131), we get a palindrome (781848187).

The spelling of 131820056 in words is "one hundred thirty-one million, eight hundred twenty thousand, fifty-six".