131228310 has 16 divisors (see below), whose sum is σ = 314948016. Its totient is φ = 34994208.

The previous prime is 131228299. The next prime is 131228311. The reversal of 131228310 is 13822131.

It is a super-2 number, since 2×131228310² = 34441738690912200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131228311) 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, 2187109 + ... + 2187168.

It is an arithmetic number, because the mean of its divisors is an integer number (19684251).

Almost surely, 2^131228310 is an apocalyptic number.

131228310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131228310 is an abundant number, since it is smaller than the sum of its proper divisors (183719706).

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

131228310 is a wasteful number, since it uses less digits than its factorization.

131228310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374287.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 131228310 is about 11455.4925690692. The cubic root of 131228310 is about 508.1701824055.

The spelling of 131228310 in words is "one hundred thirty-one million, two hundred twenty-eight thousand, three hundred ten".