131642194 has 16 divisors (see below), whose sum is σ = 204557400. Its totient is φ = 63462784.

The previous prime is 131642191. The next prime is 131642201. The reversal of 131642194 is 491246131.

It can be written as a sum of positive squares in 4 ways, for example, as 79441569 + 52200625 = 8913^2 + 7225^2 .

It is a super-2 number, since 2×131642194² = 34659334482267272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131642191) 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, 62592 + ... + 64660.

Almost surely, 2^131642194 is an apocalyptic number.

131642194 is a deficient number, since it is larger than the sum of its proper divisors (72915206).

131642194 is a wasteful number, since it uses less digits than its factorization.

131642194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197.

The product of its digits is 5184, while the sum is 31.

The square root of 131642194 is about 11473.5432190758. The cubic root of 131642194 is about 508.7038649615.

The spelling of 131642194 in words is "one hundred thirty-one million, six hundred forty-two thousand, one hundred ninety-four".