13831147 has 12 divisors (see below), whose sum is σ = 15323728. Its totient is φ = 12474000.

The previous prime is 13831121. The next prime is 13831159. The reversal of 13831147 is 74113831.

It is not a de Polignac number, because 13831147 - 2¹¹ = 13829099 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13831247) 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, 17893 + ... + 18649.

Almost surely, 2^13831147 is an apocalyptic number.

13831147 is a deficient number, since it is larger than the sum of its proper divisors (1492581).

13831147 is a wasteful number, since it uses less digits than its factorization.

13831147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 919 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 13831147 is about 3719.0250066382. The cubic root of 13831147 is about 240.0413528281.

Adding to 13831147 its reverse (74113831), we get a palindrome (87944978).

The spelling of 13831147 in words is "thirteen million, eight hundred thirty-one thousand, one hundred forty-seven".