13751213 has 16 divisors (see below), whose sum is σ = 16396800. Its totient is φ = 11522448.

The previous prime is 13751207. The next prime is 13751233. The reversal of 13751213 is 31215731.

It is not a de Polignac number, because 13751213 - 2⁶ = 13751149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13751203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15695 + ... + 16547.

It is an arithmetic number, because the mean of its divisors is an integer number (1024800).

Almost surely, 2^13751213 is an apocalyptic number.

It is an amenable number.

13751213 is a deficient number, since it is larger than the sum of its proper divisors (2645587).

13751213 is an frugal number, since it uses more digits than its factorization.

13751213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 907 counting only the distinct ones).

The product of its digits is 630, while the sum is 23.

The square root of 13751213 is about 3708.2628008274. The cubic root of 13751213 is about 239.5780374851.

Adding to 13751213 its reverse (31215731), we get a palindrome (44966944).

The spelling of 13751213 in words is "thirteen million, seven hundred fifty-one thousand, two hundred thirteen".