131194249 has 4 divisors (see below), whose sum is σ = 133985664. Its totient is φ = 128402836.

The previous prime is 131194223. The next prime is 131194303. The reversal of 131194249 is 942491131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131194249 - 2²¹ = 129097097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131194549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395637 + ... + 1395730.

It is an arithmetic number, because the mean of its divisors is an integer number (33496416).

Almost surely, 2^131194249 is an apocalyptic number.

It is an amenable number.

131194249 is a deficient number, since it is larger than the sum of its proper divisors (2791415).

131194249 is an equidigital number, since it uses as much as digits as its factorization.

131194249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791414.

The product of its digits is 7776, while the sum is 34.

The square root of 131194249 is about 11454.0058058306. The cubic root of 131194249 is about 508.1262125174.

The spelling of 131194249 in words is "one hundred thirty-one million, one hundred ninety-four thousand, two hundred forty-nine".