131266228 has 12 divisors (see below), whose sum is σ = 230211072. Its totient is φ = 65491640.

The previous prime is 131266211. The next prime is 131266237. The reversal of 131266228 is 822662131.

It is a super-2 number, since 2×131266228² = 34461645226695968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131266228.

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 3 ways as a sum of consecutive naturals, for example, 33268 + ... + 37003.

It is an arithmetic number, because the mean of its divisors is an integer number (19184256).

Almost surely, 2^131266228 is an apocalyptic number.

It is an amenable number.

131266228 is a deficient number, since it is larger than the sum of its proper divisors (98944844).

131266228 is a wasteful number, since it uses less digits than its factorization.

131266228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70742 (or 70740 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 131266228 is about 11457.1474634832. The cubic root of 131266228 is about 508.2191224079.

The spelling of 131266228 in words is "one hundred thirty-one million, two hundred sixty-six thousand, two hundred twenty-eight".