13801231 has 8 divisors (see below), whose sum is σ = 14298624. Its totient is φ = 13307160.

The previous prime is 13801213. The next prime is 13801261. The reversal of 13801231 is 13210831.

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

It is a cyclic number.

It is not a de Polignac number, because 13801231 - 2⁵ = 13801199 is a prime.

It is a super-2 number, since 2×13801231² = 380947954230722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13801199 and 13801208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13801261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10116 + ... + 11398.

It is an arithmetic number, because the mean of its divisors is an integer number (1787328).

Almost surely, 2^13801231 is an apocalyptic number.

13801231 is a deficient number, since it is larger than the sum of its proper divisors (497393).

13801231 is a wasteful number, since it uses less digits than its factorization.

13801231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 13801231 is about 3715.0008075369. Note that the first 3 decimals coincide. The cubic root of 13801231 is about 239.8681625457.

The spelling of 13801231 in words is "thirteen million, eight hundred one thousand, two hundred thirty-one".