131445210 has 32 divisors (see below), whose sum is σ = 339736320. Its totient is φ = 32355648.

The previous prime is 131445203. The next prime is 131445233. The reversal of 131445210 is 12544131.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168130 + ... + 168909.

It is an arithmetic number, because the mean of its divisors is an integer number (10616760).

Almost surely, 2^131445210 is an apocalyptic number.

131445210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131445210 is an abundant number, since it is smaller than the sum of its proper divisors (208291110).

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

131445210 is a wasteful number, since it uses less digits than its factorization.

131445210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337062.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 131445210 is about 11464.9557347597. The cubic root of 131445210 is about 508.4500037378.

Adding to 131445210 its reverse (12544131), we get a palindrome (143989341).

The spelling of 131445210 in words is "one hundred thirty-one million, four hundred forty-five thousand, two hundred ten".