131103729 has 24 divisors (see below), whose sum is σ = 192628800. Its totient is φ = 85911072.

The previous prime is 131103719. The next prime is 131103761. The reversal of 131103729 is 927301131.

It is not a de Polignac number, because 131103729 - 2⁷ = 131103601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131103719) 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, 218572 + ... + 219170.

It is an arithmetic number, because the mean of its divisors is an integer number (8026200).

Almost surely, 2^131103729 is an apocalyptic number.

It is an amenable number.

131103729 is a deficient number, since it is larger than the sum of its proper divisors (61525071).

131103729 is a wasteful number, since it uses less digits than its factorization.

131103729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 131103729 is about 11450.0536679965. The cubic root of 131103729 is about 508.0093218059.

The spelling of 131103729 in words is "one hundred thirty-one million, one hundred three thousand, seven hundred twenty-nine".