131382691 has 4 divisors (see below), whose sum is σ = 143326584. Its totient is φ = 119438800.

The previous prime is 131382683. The next prime is 131382703. The reversal of 131382691 is 196283131.

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

It is a cyclic number.

It is not a de Polignac number, because 131382691 - 2³ = 131382683 is a prime.

It is a super-2 number, since 2×131382691² = 34522822988802962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131382631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5971930 + ... + 5971951.

It is an arithmetic number, because the mean of its divisors is an integer number (35831646).

Almost surely, 2^131382691 is an apocalyptic number.

131382691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131382691 is a deficient number, since it is larger than the sum of its proper divisors (11943893).

131382691 is a wasteful number, since it uses less digits than its factorization.

131382691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11943892.

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

The square root of 131382691 is about 11462.2288844709. The cubic root of 131382691 is about 508.3693799635.

The spelling of 131382691 in words is "one hundred thirty-one million, three hundred eighty-two thousand, six hundred ninety-one".