131399363 has 4 divisors (see below), whose sum is σ = 131623800. Its totient is φ = 131174928.

The previous prime is 131399351. The next prime is 131399369. The reversal of 131399363 is 363993131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131399363 - 2⁴ = 131399347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131399369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111338 + ... + 112511.

It is an arithmetic number, because the mean of its divisors is an integer number (32905950).

Almost surely, 2^131399363 is an apocalyptic number.

131399363 is a deficient number, since it is larger than the sum of its proper divisors (224437).

131399363 is an equidigital number, since it uses as much as digits as its factorization.

131399363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224436.

The product of its digits is 39366, while the sum is 38.

The square root of 131399363 is about 11462.9561196054. The cubic root of 131399363 is about 508.3908824809.

The spelling of 131399363 in words is "one hundred thirty-one million, three hundred ninety-nine thousand, three hundred sixty-three".