231534983 has 2 divisors, whose sum is σ = 231534984. Its totient is φ = 231534982.

The previous prime is 231534977. The next prime is 231535027. The reversal of 231534983 is 389435132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231534983 - 2¹⁰ = 231533959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231534923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115767491 + 115767492.

It is an arithmetic number, because the mean of its divisors is an integer number (115767492).

Almost surely, 2^231534983 is an apocalyptic number.

231534983 is a deficient number, since it is larger than the sum of its proper divisors (1).

231534983 is an equidigital number, since it uses as much as digits as its factorization.

231534983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The square root of 231534983 is about 15216.2736239856. The cubic root of 231534983 is about 614.0525504365.

The spelling of 231534983 in words is "two hundred thirty-one million, five hundred thirty-four thousand, nine hundred eighty-three".