131889983 has 4 divisors (see below), whose sum is σ = 132699288. Its totient is φ = 131080680.

The previous prime is 131889977. The next prime is 131889997. The reversal of 131889983 is 389988131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389988131 = 13 ⋅29999087.

It is a cyclic number.

It is not a de Polignac number, because 131889983 - 2¹⁰ = 131888959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131889913) 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, 404408 + ... + 404733.

It is an arithmetic number, because the mean of its divisors is an integer number (33174822).

Almost surely, 2^131889983 is an apocalyptic number.

131889983 is a deficient number, since it is larger than the sum of its proper divisors (809305).

131889983 is an equidigital number, since it uses as much as digits as its factorization.

131889983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809304.

The product of its digits is 373248, while the sum is 50.

The square root of 131889983 is about 11484.3364196631. The cubic root of 131889983 is about 509.0228412521.

The spelling of 131889983 in words is "one hundred thirty-one million, eight hundred eighty-nine thousand, nine hundred eighty-three".