13143238 has 8 divisors (see below), whose sum is σ = 19899432. Its totient is φ = 6510096.

The previous prime is 13143233. The next prime is 13143239. The reversal of 13143238 is 83234131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13143233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30495 + ... + 30922.

It is an arithmetic number, because the mean of its divisors is an integer number (2487429).

Almost surely, 2^13143238 is an apocalyptic number.

13143238 is a deficient number, since it is larger than the sum of its proper divisors (6756194).

13143238 is a wasteful number, since it uses less digits than its factorization.

13143238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61526.

The product of its digits is 1728, while the sum is 25.

The square root of 13143238 is about 3625.3603958779. The cubic root of 13143238 is about 235.9939072448.

Adding to 13143238 its reverse (83234131), we get a palindrome (96377369).

The spelling of 13143238 in words is "thirteen million, one hundred forty-three thousand, two hundred thirty-eight".