131354591 has 8 divisors (see below), whose sum is σ = 134835840. Its totient is φ = 127915288.

The previous prime is 131354569. The next prime is 131354593. The reversal of 131354591 is 195453131.

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

It is a cyclic number.

It is not a de Polignac number, because 131354591 - 2²² = 127160287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131354593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4091 + ... + 16716.

It is an arithmetic number, because the mean of its divisors is an integer number (16854480).

Almost surely, 2^131354591 is an apocalyptic number.

131354591 is a deficient number, since it is larger than the sum of its proper divisors (3481249).

131354591 is a wasteful number, since it uses less digits than its factorization.

131354591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20973.

The product of its digits is 8100, while the sum is 32.

The square root of 131354591 is about 11461.0030538343. The cubic root of 131354591 is about 508.3331341992. Note that the first 3 decimals are identical.

The spelling of 131354591 in words is "one hundred thirty-one million, three hundred fifty-four thousand, five hundred ninety-one".