10638431 has 4 divisors (see below), whose sum is σ = 10743864. Its totient is φ = 10533000.

The previous prime is 10638421. The next prime is 10638457. The reversal of 10638431 is 13483601.

10638431 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 a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10638431 - 2⁶ = 10638367 is a prime.

It is a super-2 number, since 2×10638431² = 226352428283522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10638431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10638421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52565 + ... + 52766.

It is an arithmetic number, because the mean of its divisors is an integer number (2685966).

Almost surely, 2^10638431 is an apocalyptic number.

10638431 is a deficient number, since it is larger than the sum of its proper divisors (105433).

10638431 is a wasteful number, since it uses less digits than its factorization.

10638431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105432.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 10638431 is about 3261.6607732871. The cubic root of 10638431 is about 219.9340780449.

The spelling of 10638431 in words is "ten million, six hundred thirty-eight thousand, four hundred thirty-one".