131188290 has 32 divisors (see below), whose sum is σ = 315233856. Its totient is φ = 34941120.

The previous prime is 131188283. The next prime is 131188307. The reversal of 131188290 is 92881131.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28489 + ... + 32771.

It is an arithmetic number, because the mean of its divisors is an integer number (9851058).

Almost surely, 2^131188290 is an apocalyptic number.

131188290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131188290 is an abundant number, since it is smaller than the sum of its proper divisors (184045566).

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

131188290 is a wasteful number, since it uses less digits than its factorization.

131188290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5314.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 131188290 is about 11453.7456755421. The cubic root of 131188290 is about 508.1185191671.

The spelling of 131188290 in words is "one hundred thirty-one million, one hundred eighty-eight thousand, two hundred ninety".