131209130 has 16 divisors (see below), whose sum is σ = 254344104. Its totient is φ = 48446400.

The previous prime is 131209129. The next prime is 131209151. The reversal of 131209130 is 31902131.

It can be written as a sum of positive squares in 4 ways, for example, as 38105929 + 93103201 = 6173^2 + 9649^2 .

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, 504521 + ... + 504780.

Almost surely, 2^131209130 is an apocalyptic number.

131209130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131209130 is a deficient number, since it is larger than the sum of its proper divisors (123134974).

131209130 is a wasteful number, since it uses less digits than its factorization.

131209130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009321.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 131209130 is about 11454.6553854754. The cubic root of 131209130 is about 508.1454235737.

The spelling of 131209130 in words is "one hundred thirty-one million, two hundred nine thousand, one hundred thirty".