131000228 has 12 divisors (see below), whose sum is σ = 232013040. Its totient is φ = 64710792.

The previous prime is 131000227. The next prime is 131000251. The reversal of 131000228 is 822000131.

It is a super-2 number, since 2×131000228² = 34322119472103968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131000227) by changing a digit.

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, 196958 + ... + 197621.

It is an arithmetic number, because the mean of its divisors is an integer number (19334420).

Almost surely, 2^131000228 is an apocalyptic number.

It is an amenable number.

131000228 is a deficient number, since it is larger than the sum of its proper divisors (101012812).

131000228 is a wasteful number, since it uses less digits than its factorization.

131000228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394666 (or 394664 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 131000228 is about 11445.5331024815. The cubic root of 131000228 is about 507.8756024583.

Adding to 131000228 its reverse (822000131), we get a palindrome (953000359).

The spelling of 131000228 in words is "one hundred thirty-one million, two hundred twenty-eight", and thus it is an aban number.