131603699 has 2 divisors, whose sum is σ = 131603700. Its totient is φ = 131603698.

The previous prime is 131603669. The next prime is 131603701. The reversal of 131603699 is 996306131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131603699 - 2²⁰ = 130555123 is a prime.

Together with 131603701, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131603609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65801849 + 65801850.

It is an arithmetic number, because the mean of its divisors is an integer number (65801850).

Almost surely, 2^131603699 is an apocalyptic number.

131603699 is a deficient number, since it is larger than the sum of its proper divisors (1).

131603699 is an equidigital number, since it uses as much as digits as its factorization.

131603699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 131603699 is about 11471.8655414017. The cubic root of 131603699 is about 508.6542748217.

The spelling of 131603699 in words is "one hundred thirty-one million, six hundred three thousand, six hundred ninety-nine".