131097228 has 24 divisors (see below), whose sum is σ = 306109440. Its totient is φ = 43668240.

The previous prime is 131097227. The next prime is 131097257. The reversal of 131097228 is 822790131.

It is not an unprimeable number, because it can be changed into a prime (131097221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19533 + ... + 25371.

It is an arithmetic number, because the mean of its divisors is an integer number (12754560).

Almost surely, 2^131097228 is an apocalyptic number.

It is an amenable number.

131097228 is an abundant number, since it is smaller than the sum of its proper divisors (175012212).

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

131097228 is a wasteful number, since it uses less digits than its factorization.

131097228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7717 (or 7715 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 131097228 is about 11449.7697793449. The cubic root of 131097228 is about 508.0009248335. Note that the first 3 decimals are identical.

The spelling of 131097228 in words is "one hundred thirty-one million, ninety-seven thousand, two hundred twenty-eight".