131082220 has 24 divisors (see below), whose sum is σ = 275536800. Its totient is φ = 52382592.

The previous prime is 131082199. The next prime is 131082269. The reversal of 131082220 is 22280131.

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, 23896 + ... + 28864.

It is an arithmetic number, because the mean of its divisors is an integer number (11480700).

Almost surely, 2^131082220 is an apocalyptic number.

131082220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131082220 is an abundant number, since it is smaller than the sum of its proper divisors (144454580).

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

131082220 is a wasteful number, since it uses less digits than its factorization.

131082220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6297 (or 6295 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 131082220 is about 11449.1143762302. The cubic root of 131082220 is about 507.9815387922.

It can be divided in two parts, 13 and 1082220, that multiplied together give a triangular number (14068860 = T₅₃₀₄).

The spelling of 131082220 in words is "one hundred thirty-one million, eighty-two thousand, two hundred twenty".