131709903 has 16 divisors (see below), whose sum is σ = 193522560. Its totient is φ = 79166304.

The previous prime is 131709887. The next prime is 131709923. The reversal of 131709903 is 309907131.

It is not a de Polignac number, because 131709903 - 2⁴ = 131709887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131709923) 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, 37593 + ... + 40946.

It is an arithmetic number, because the mean of its divisors is an integer number (12095160).

Almost surely, 2^131709903 is an apocalyptic number.

131709903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131709903 is a deficient number, since it is larger than the sum of its proper divisors (61812657).

131709903 is a wasteful number, since it uses less digits than its factorization.

131709903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78598.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 131709903 is about 11476.4934975802. The cubic root of 131709903 is about 508.7910657931.

The spelling of 131709903 in words is "one hundred thirty-one million, seven hundred nine thousand, nine hundred three".