131332228 has 24 divisors (see below), whose sum is σ = 234837792. Its totient is φ = 64251264.

The previous prime is 131332211. The next prime is 131332273. The reversal of 131332228 is 822233131.

It is a super-2 number, since 2×131332228² = 34496308222887968, which contains 22 as substring.

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, 33676 + ... + 37372.

It is an arithmetic number, because the mean of its divisors is an integer number (9784908).

Almost surely, 2^131332228 is an apocalyptic number.

It is an amenable number.

131332228 is a deficient number, since it is larger than the sum of its proper divisors (103505564).

131332228 is a wasteful number, since it uses less digits than its factorization.

131332228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891 (or 3889 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 131332228 is about 11460.0273996182. The cubic root of 131332228 is about 508.3042848102.

Adding to 131332228 its reverse (822233131), we get a palindrome (953565359).

The spelling of 131332228 in words is "one hundred thirty-one million, three hundred thirty-two thousand, two hundred twenty-eight".