131120210 has 16 divisors (see below), whose sum is σ = 254171736. Its totient is φ = 48413568.

The previous prime is 131120203. The next prime is 131120219. The reversal of 131120210 is 12021131.

It can be written as a sum of positive squares in 4 ways, for example, as 101949409 + 29170801 = 10097^2 + 5401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131120191 and 131120200.

It is not an unprimeable number, because it can be changed into a prime (131120219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504179 + ... + 504438.

Almost surely, 2^131120210 is an apocalyptic number.

131120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131120210 is a deficient number, since it is larger than the sum of its proper divisors (123051526).

131120210 is a wasteful number, since it uses less digits than its factorization.

131120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008637.

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

The square root of 131120210 is about 11450.7733363297. The cubic root of 131120210 is about 508.0306081336.

Adding to 131120210 its reverse (12021131), we get a palindrome (143141341).

The spelling of 131120210 in words is "one hundred thirty-one million, one hundred twenty thousand, two hundred ten".