131422191 has 8 divisors (see below), whose sum is σ = 175286784. Its totient is φ = 87586200.

The previous prime is 131422169. The next prime is 131422201. The reversal of 131422191 is 191224131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131422191 - 2¹¹ = 131420143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131422891) 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, 8416 + ... + 18266.

It is an arithmetic number, because the mean of its divisors is an integer number (21910848).

Almost surely, 2^131422191 is an apocalyptic number.

131422191 is a deficient number, since it is larger than the sum of its proper divisors (43864593).

131422191 is an equidigital number, since it uses as much as digits as its factorization.

131422191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14301.

The product of its digits is 432, while the sum is 24.

The square root of 131422191 is about 11463.9518055512. The cubic root of 131422191 is about 508.4203216775.

The spelling of 131422191 in words is "one hundred thirty-one million, four hundred twenty-two thousand, one hundred ninety-one".