231220083 has 4 divisors (see below), whose sum is σ = 308293448. Its totient is φ = 154146720.

The previous prime is 231220069. The next prime is 231220097. The reversal of 231220083 is 380022132.

231220083 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 (231220069) and next prime (231220097).

It is not a de Polignac number, because 231220083 - 2⁶ = 231220019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231220013) 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, 38536678 + ... + 38536683.

It is an arithmetic number, because the mean of its divisors is an integer number (77073362).

Almost surely, 2^231220083 is an apocalyptic number.

231220083 is a deficient number, since it is larger than the sum of its proper divisors (77073365).

231220083 is an equidigital number, since it uses as much as digits as its factorization.

231220083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77073364.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 231220083 is about 15205.9226290285. The cubic root of 231220083 is about 613.7740426645.

The spelling of 231220083 in words is "two hundred thirty-one million, two hundred twenty thousand, eighty-three".