231286983 has 4 divisors (see below), whose sum is σ = 308382648. Its totient is φ = 154191320.

The previous prime is 231286969. The next prime is 231286997. The reversal of 231286983 is 389682132.

231286983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (231286969) and next prime (231286997).

It is a cyclic number.

It is not a de Polignac number, because 231286983 - 2¹³ = 231278791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231286933) 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, 38547828 + ... + 38547833.

It is an arithmetic number, because the mean of its divisors is an integer number (77095662).

Almost surely, 2^231286983 is an apocalyptic number.

231286983 is a deficient number, since it is larger than the sum of its proper divisors (77095665).

231286983 is an equidigital number, since it uses as much as digits as its factorization.

231286983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77095664.

The product of its digits is 124416, while the sum is 42.

The square root of 231286983 is about 15208.1222706815. The cubic root of 231286983 is about 613.8332323384.

The spelling of 231286983 in words is "two hundred thirty-one million, two hundred eighty-six thousand, nine hundred eighty-three".