131641228 has 6 divisors (see below), whose sum is σ = 230372156. Its totient is φ = 65820612.

The previous prime is 131641187. The next prime is 131641243. The reversal of 131641228 is 822146131.

It is a junction number, because it is equal to n+sod(n) for n = 131641196 and 131641205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16455150 + ... + 16455157.

Almost surely, 2^131641228 is an apocalyptic number.

It is an amenable number.

131641228 is a deficient number, since it is larger than the sum of its proper divisors (98730928).

131641228 is a wasteful number, since it uses less digits than its factorization.

131641228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32910311 (or 32910309 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 131641228 is about 11473.5011221510. The cubic root of 131641228 is about 508.7026206564.

Adding to 131641228 its reverse (822146131), we get a palindrome (953787359).

The spelling of 131641228 in words is "one hundred thirty-one million, six hundred forty-one thousand, two hundred twenty-eight".