131322210 has 16 divisors (see below), whose sum is σ = 315173376. Its totient is φ = 35019248.

The previous prime is 131322199. The next prime is 131322223. The reversal of 131322210 is 12223131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 131322210.

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, 2188674 + ... + 2188733.

It is an arithmetic number, because the mean of its divisors is an integer number (19698336).

Almost surely, 2^131322210 is an apocalyptic number.

131322210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131322210 is an abundant number, since it is smaller than the sum of its proper divisors (183851166).

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

131322210 is a wasteful number, since it uses less digits than its factorization.

131322210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377417.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131322210 is about 11459.5903068129. The cubic root of 131322210 is about 508.2913600268.

Adding to 131322210 its reverse (12223131), we get a palindrome (143545341).

The spelling of 131322210 in words is "one hundred thirty-one million, three hundred twenty-two thousand, two hundred ten".