123032213 has 12 divisors (see below), whose sum is σ = 131419332. Its totient is φ = 115153920.

The previous prime is 123032209. The next prime is 123032219. The reversal of 123032213 is 312230321.

It can be written as a sum of positive squares in 6 ways, for example, as 48762289 + 74269924 = 6983^2 + 8618^2 .

It is not a de Polignac number, because 123032213 - 2² = 123032209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123032191 and 123032200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123032219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55853 + ... + 58013.

It is an arithmetic number, because the mean of its divisors is an integer number (10951611).

Almost surely, 2^123032213 is an apocalyptic number.

It is an amenable number.

123032213 is a deficient number, since it is larger than the sum of its proper divisors (8387119).

123032213 is a wasteful number, since it uses less digits than its factorization.

123032213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2375 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123032213 is about 11091.9886855334. The cubic root of 123032213 is about 497.3623945412.

Adding to 123032213 its reverse (312230321), we get a palindrome (435262534).

The spelling of 123032213 in words is "one hundred twenty-three million, thirty-two thousand, two hundred thirteen".