131491367 has 16 divisors (see below), whose sum is σ = 156291072. Its totient is φ = 108250560.

The previous prime is 131491363. The next prime is 131491403. The reversal of 131491367 is 763194131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131491367 - 2² = 131491363 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131491363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27518 + ... + 31940.

It is an arithmetic number, because the mean of its divisors is an integer number (9768192).

Almost surely, 2^131491367 is an apocalyptic number.

131491367 is a deficient number, since it is larger than the sum of its proper divisors (24799705).

131491367 is a wasteful number, since it uses less digits than its factorization.

131491367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4598.

The product of its digits is 13608, while the sum is 35.

The square root of 131491367 is about 11466.9685183138. The cubic root of 131491367 is about 508.5095108646.

The spelling of 131491367 in words is "one hundred thirty-one million, four hundred ninety-one thousand, three hundred sixty-seven".