13831146 has 48 divisors (see below), whose sum is σ = 35363328. Its totient is φ = 3823200.

The previous prime is 13831121. The next prime is 13831159. The reversal of 13831146 is 64113831.

13831146 = T₂₄₃ + T₂₄₄ + ... + T₄₅₉.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2136 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (736736).

Almost surely, 2^13831146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13831146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17681664).

13831146 is an abundant number, since it is smaller than the sum of its proper divisors (21532182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13831146 is a wasteful number, since it uses less digits than its factorization.

13831146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587 (or 3584 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 13831146 is about 3719.0248721943. The cubic root of 13831146 is about 240.0413470430.

Adding to 13831146 its reverse (64113831), we get a palindrome (77944977).

The spelling of 13831146 in words is "thirteen million, eight hundred thirty-one thousand, one hundred forty-six".