983840131987 has 2 divisors, whose sum is σ = 983840131988. Its totient is φ = 983840131986.

The previous prime is 983840131973. The next prime is 983840132057. The reversal of 983840131987 is 789131048389.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 983840131987 - 2²³ = 983831743379 is a prime.

It is not a weakly prime, because it can be changed into another prime (983840171987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491920065993 + 491920065994.

It is an arithmetic number, because the mean of its divisors is an integer number (491920065994).

Almost surely, 2^983840131987 is an apocalyptic number.

983840131987 is a deficient number, since it is larger than the sum of its proper divisors (1).

983840131987 is an equidigital number, since it uses as much as digits as its factorization.

983840131987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 983840131987 in words is "nine hundred eighty-three billion, eight hundred forty million, one hundred thirty-one thousand, nine hundred eighty-seven".