123235213 has 2 divisors, whose sum is σ = 123235214. Its totient is φ = 123235212.

The previous prime is 123235207. The next prime is 123235243. The reversal of 123235213 is 312532321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80227849 + 43007364 = 8957^2 + 6558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123235213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123235243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61617606 + 61617607.

It is an arithmetic number, because the mean of its divisors is an integer number (61617607).

Almost surely, 2^123235213 is an apocalyptic number.

It is an amenable number.

123235213 is a deficient number, since it is larger than the sum of its proper divisors (1).

123235213 is an equidigital number, since it uses as much as digits as its factorization.

123235213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 22.

The square root of 123235213 is about 11101.1356626248. The cubic root of 123235213 is about 497.6357893019.

Adding to 123235213 its reverse (312532321), we get a palindrome (435767534).

The spelling of 123235213 in words is "one hundred twenty-three million, two hundred thirty-five thousand, two hundred thirteen".