131210194 has 4 divisors (see below), whose sum is σ = 196815294. Its totient is φ = 65605096.

The previous prime is 131210173. The next prime is 131210213. The reversal of 131210194 is 491012131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 101103025 + 30107169 = 10055^2 + 5487^2 .

It is a super-2 number, since 2×131210194² = 34432230019035272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32802547 + ... + 32802550.

Almost surely, 2^131210194 is an apocalyptic number.

131210194 is a deficient number, since it is larger than the sum of its proper divisors (65605100).

131210194 is an equidigital number, since it uses as much as digits as its factorization.

131210194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65605099.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 131210194 is about 11454.7018293799. The cubic root of 131210194 is about 508.1467971195.

The spelling of 131210194 in words is "one hundred thirty-one million, two hundred ten thousand, one hundred ninety-four".