13143851 has 4 divisors (see below), whose sum is σ = 15021552. Its totient is φ = 11266152.

The previous prime is 13143847. The next prime is 13143881. The reversal of 13143851 is 15834131.

13143851 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13143851 - 2² = 13143847 is a prime.

It is a super-2 number, since 2×13143851² = 345521638220402, which contains 22 as substring.

13143851 is strictly pandigital in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 13143851.

It is not an unprimeable number, because it can be changed into a prime (13143811) 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, 938840 + ... + 938853.

It is an arithmetic number, because the mean of its divisors is an integer number (3755388).

Almost surely, 2^13143851 is an apocalyptic number.

13143851 is a deficient number, since it is larger than the sum of its proper divisors (1877701).

13143851 is an equidigital number, since it uses as much as digits as its factorization.

13143851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877700.

The product of its digits is 1440, while the sum is 26.

The square root of 13143851 is about 3625.4449382110. Note that the first 3 decimals coincide. The cubic root of 13143851 is about 235.9975761027.

Adding to 13143851 its reverse (15834131), we get a palindrome (28977982).

The spelling of 13143851 in words is "thirteen million, one hundred forty-three thousand, eight hundred fifty-one".