13831990 has 8 divisors (see below), whose sum is σ = 24897600. Its totient is φ = 5532792.

The previous prime is 13831963. The next prime is 13832009. The reversal of 13831990 is 9913831.

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

It is a plaindrome in base 15.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 691590 + ... + 691609.

It is an arithmetic number, because the mean of its divisors is an integer number (3112200).

Almost surely, 2^13831990 is an apocalyptic number.

13831990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13831990 is a deficient number, since it is larger than the sum of its proper divisors (11065610).

13831990 is a wasteful number, since it uses less digits than its factorization.

13831990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383206.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 13831990 is about 3719.1383410677. The cubic root of 13831990 is about 240.0462295205.

The spelling of 13831990 in words is "thirteen million, eight hundred thirty-one thousand, nine hundred ninety".