131243190 has 32 divisors (see below), whose sum is σ = 339214176. Its totient is φ = 32305920.

The previous prime is 131243171. The next prime is 131243191. The reversal of 131243190 is 91342131.

131243190 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×131243190² = 34449549842752200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131243190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131243191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167871 + ... + 168650.

It is an arithmetic number, because the mean of its divisors is an integer number (10600443).

Almost surely, 2^131243190 is an apocalyptic number.

131243190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131243190 is an abundant number, since it is smaller than the sum of its proper divisors (207970986).

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

131243190 is a wasteful number, since it uses less digits than its factorization.

131243190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336544.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 131243190 is about 11456.1420207677. The cubic root of 131243190 is about 508.1893888469.

The spelling of 131243190 in words is "one hundred thirty-one million, two hundred forty-three thousand, one hundred ninety".