231833969 has 2 divisors, whose sum is σ = 231833970. Its totient is φ = 231833968.

The previous prime is 231833963. The next prime is 231833993. The reversal of 231833969 is 969338132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231404944 + 429025 = 15212^2 + 655^2 .

It is a cyclic number.

It is not a de Polignac number, because 231833969 - 2²⁴ = 215056753 is a prime.

It is a super-2 number, since 2×231833969² = 107493978364585922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231833963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115916984 + 115916985.

It is an arithmetic number, because the mean of its divisors is an integer number (115916985).

Almost surely, 2^231833969 is an apocalyptic number.

It is an amenable number.

231833969 is a deficient number, since it is larger than the sum of its proper divisors (1).

231833969 is an equidigital number, since it uses as much as digits as its factorization.

231833969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 231833969 is about 15226.0950016739. The cubic root of 231833969 is about 614.3167497441.

The spelling of 231833969 in words is "two hundred thirty-one million, eight hundred thirty-three thousand, nine hundred sixty-nine".