131210210 has 32 divisors (see below), whose sum is σ = 245179440. Its totient is φ = 50496768.

The previous prime is 131210173. The next prime is 131210213. The reversal of 131210210 is 12012131.

It can be written as a sum of positive squares in 8 ways, for example, as 25593481 + 105616729 = 5059^2 + 10277^2 .

It is a super-2 number, since 2×131210210² = 34432238416488200, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131210191 and 131210200.

It is not an unprimeable number, because it can be changed into a prime (131210213) 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, 107564 + ... + 108776.

Almost surely, 2^131210210 is an apocalyptic number.

131210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131210210 is a deficient number, since it is larger than the sum of its proper divisors (113969230).

131210210 is a wasteful number, since it uses less digits than its factorization.

131210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 131210210 is about 11454.7025277831. The cubic root of 131210210 is about 508.1468177743.

Adding to 131210210 its reverse (12012131), we get a palindrome (143222341).

The spelling of 131210210 in words is "one hundred thirty-one million, two hundred ten thousand, two hundred ten".