13708431 has 12 divisors (see below), whose sum is σ = 21601320. Its totient is φ = 8308080.

The previous prime is 13708411. The next prime is 13708433. The reversal of 13708431 is 13480731.

13708431 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13708431 - 2⁹ = 13707919 is a prime.

It is a super-2 number, since 2×13708431² = 375842160963522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13708395 and 13708404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13708433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69136 + ... + 69333.

It is an arithmetic number, because the mean of its divisors is an integer number (1800110).

Almost surely, 2^13708431 is an apocalyptic number.

13708431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13708431 is a deficient number, since it is larger than the sum of its proper divisors (7892889).

13708431 is a wasteful number, since it uses less digits than its factorization.

13708431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138486 (or 138483 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13708431 is about 3702.4898379334. The cubic root of 13708431 is about 239.3293254778.

It can be divided in two parts, 1370 and 8431, that added together give a square (9801 = 99²).

The spelling of 13708431 in words is "thirteen million, seven hundred eight thousand, four hundred thirty-one".