131196728 has 24 divisors (see below), whose sum is σ = 266374800. Its totient is φ = 60551712.

The previous prime is 131196727. The next prime is 131196731. The reversal of 131196728 is 827691131.

It is a junction number, because it is equal to n+sod(n) for n = 131196691 and 131196700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131196727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47168 + ... + 49871.

It is an arithmetic number, because the mean of its divisors is an integer number (11098950).

Almost surely, 2^131196728 is an apocalyptic number.

It is an amenable number.

131196728 is an abundant number, since it is smaller than the sum of its proper divisors (135178072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131196728 is a wasteful number, since it uses less digits than its factorization.

131196728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97071 (or 97054 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 131196728 is about 11454.1140207351. The cubic root of 131196728 is about 508.1294129548.

The spelling of 131196728 in words is "one hundred thirty-one million, one hundred ninety-six thousand, seven hundred twenty-eight".