131452228 has 24 divisors (see below), whose sum is σ = 244452600. Its totient is φ = 61850624.

The previous prime is 131452219. The next prime is 131452253. The reversal of 131452228 is 822254131.

It can be written as a sum of positive squares in 4 ways, for example, as 45185284 + 86266944 = 6722^2 + 9288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131452196 and 131452205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16308 + ... + 22996.

It is an arithmetic number, because the mean of its divisors is an integer number (10185525).

Almost surely, 2^131452228 is an apocalyptic number.

It is an amenable number.

131452228 is a deficient number, since it is larger than the sum of its proper divisors (113000372).

131452228 is an equidigital number, since it uses as much as digits as its factorization.

131452228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6744 (or 6708 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 131452228 is about 11465.2617937839. The cubic root of 131452228 is about 508.4590524728.

The spelling of 131452228 in words is "one hundred thirty-one million, four hundred fifty-two thousand, two hundred twenty-eight".