131982563 has 4 divisors (see below), whose sum is σ = 133952520. Its totient is φ = 130012608.

The previous prime is 131982559. The next prime is 131982583. The reversal of 131982563 is 365289131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365289131 = 41 ⋅8909491.

It is a cyclic number.

It is not a de Polignac number, because 131982563 - 2² = 131982559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131982503) 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, 984878 + ... + 985011.

It is an arithmetic number, because the mean of its divisors is an integer number (33488130).

Almost surely, 2^131982563 is an apocalyptic number.

131982563 is a deficient number, since it is larger than the sum of its proper divisors (1969957).

131982563 is an equidigital number, since it uses as much as digits as its factorization.

131982563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969956.

The product of its digits is 38880, while the sum is 38.

The square root of 131982563 is about 11488.3664199920. The cubic root of 131982563 is about 509.1419160328.

The spelling of 131982563 in words is "one hundred thirty-one million, nine hundred eighty-two thousand, five hundred sixty-three".