13831000 has 32 divisors (see below), whose sum is σ = 32366880. Its totient is φ = 5532000.

The previous prime is 13830997. The next prime is 13831009. The reversal of 13831000 is 13831.

It is a super-2 number, since 2×13831000² = 382593122000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13831009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5916 + ... + 7915.

It is an arithmetic number, because the mean of its divisors is an integer number (1011465).

Almost surely, 2^13831000 is an apocalyptic number.

13831000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13831000 is an abundant number, since it is smaller than the sum of its proper divisors (18535880).

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

13831000 is a wasteful number, since it uses less digits than its factorization.

13831000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13852 (or 13838 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 13831000 is about 3719.0052433413. The cubic root of 13831000 is about 240.0405024237.

Adding to 13831000 its reverse (13831), we get a palindrome (13844831).

13831000 divided by its reverse (13831) gives a cube (1000 = 10³).

The spelling of 13831000 in words is "thirteen million, eight hundred thirty-one thousand".