131683399 has 2 divisors, whose sum is σ = 131683400. Its totient is φ = 131683398.

The previous prime is 131683397. The next prime is 131683451. The reversal of 131683399 is 993386131.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (993386131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131683399 - 2¹ = 131683397 is a prime.

Together with 131683397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131683393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65841699 + 65841700.

It is an arithmetic number, because the mean of its divisors is an integer number (65841700).

Almost surely, 2^131683399 is an apocalyptic number.

131683399 is a deficient number, since it is larger than the sum of its proper divisors (1).

131683399 is an equidigital number, since it uses as much as digits as its factorization.

131683399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 43.

The square root of 131683399 is about 11475.3387313839. The cubic root of 131683399 is about 508.7569354740.

The spelling of 131683399 in words is "one hundred thirty-one million, six hundred eighty-three thousand, three hundred ninety-nine".