13431838 has 16 divisors (see below), whose sum is σ = 23140224. Its totient is φ = 5727960.

The previous prime is 13431811. The next prime is 13431857. The reversal of 13431838 is 83813431.

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 7 ways as a sum of consecutive naturals, for example, 681 + ... + 5227.

It is an arithmetic number, because the mean of its divisors is an integer number (1446264).

Almost surely, 2^13431838 is an apocalyptic number.

13431838 is a deficient number, since it is larger than the sum of its proper divisors (9708386).

13431838 is a wasteful number, since it uses less digits than its factorization.

13431838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4767.

The product of its digits is 6912, while the sum is 31.

The square root of 13431838 is about 3664.9472028939. The cubic root of 13431838 is about 237.7087391075.

The spelling of 13431838 in words is "thirteen million, four hundred thirty-one thousand, eight hundred thirty-eight".