234323021 has 4 divisors (see below), whose sum is σ = 238164444. Its totient is φ = 230481600.

The previous prime is 234322973. The next prime is 234323071. The reversal of 234323021 is 120323432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 80910025 + 153412996 = 8995^2 + 12386^2 .

It is a cyclic number.

It is not a de Polignac number, because 234323021 - 2¹⁸ = 234060877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234322984 and 234323002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234323071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920620 + ... + 1920741.

It is an arithmetic number, because the mean of its divisors is an integer number (59541111).

Almost surely, 2^234323021 is an apocalyptic number.

It is an amenable number.

234323021 is a deficient number, since it is larger than the sum of its proper divisors (3841423).

234323021 is an equidigital number, since it uses as much as digits as its factorization.

234323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841422.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 234323021 is about 15307.6131712295. The cubic root of 234323021 is about 616.5074361061.

Adding to 234323021 its reverse (120323432), we get a palindrome (354646453).

The spelling of 234323021 in words is "two hundred thirty-four million, three hundred twenty-three thousand, twenty-one".