13123210 has 16 divisors (see below), whose sum is σ = 23946696. Its totient is φ = 5177088.

The previous prime is 13123207. The next prime is 13123211. The reversal of 13123210 is 1232131.

It can be written as a sum of positive squares in 4 ways, for example, as 10870209 + 2253001 = 3297^2 + 1501^2 .

It is not an unprimeable number, because it can be changed into a prime (13123211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8259 + ... + 9718.

Almost surely, 2^13123210 is an apocalyptic number.

13123210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13123210 is a deficient number, since it is larger than the sum of its proper divisors (10823486).

13123210 is a wasteful number, since it uses less digits than its factorization.

13123210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18057.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13123210 is about 3622.5971346535. The cubic root of 13123210 is about 235.8739751350.

Adding to 13123210 its reverse (1232131), we get a palindrome (14355341).

The spelling of 13123210 in words is "thirteen million, one hundred twenty-three thousand, two hundred ten".