131899743 has 24 divisors (see below), whose sum is σ = 199617600. Its totient is φ = 83813184.

The previous prime is 131899739. The next prime is 131899759. The reversal of 131899743 is 347998131.

It is not a de Polignac number, because 131899743 - 2² = 131899739 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131899793) 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 23 ways as a sum of consecutive naturals, for example, 17421 + ... + 23817.

It is an arithmetic number, because the mean of its divisors is an integer number (8317400).

Almost surely, 2^131899743 is an apocalyptic number.

131899743 is a deficient number, since it is larger than the sum of its proper divisors (67717857).

131899743 is a wasteful number, since it uses less digits than its factorization.

131899743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6511 (or 6508 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 131899743 is about 11484.7613383997. The cubic root of 131899743 is about 509.0353970209.

The spelling of 131899743 in words is "one hundred thirty-one million, eight hundred ninety-nine thousand, seven hundred forty-three".