10440431 has 4 divisors (see below), whose sum is σ = 11054592. Its totient is φ = 9826272.

The previous prime is 10440427. The next prime is 10440433. The reversal of 10440431 is 13404401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13404401 = 3137 ⋅4273.

It is not a de Polignac number, because 10440431 - 2² = 10440427 is a prime.

It is a super-2 number, since 2×10440431² = 218005198931522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 614143 = 10440431 / (1 + 0 + 4 + 4 + 0 + 4 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10440433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307055 + ... + 307088.

It is an arithmetic number, because the mean of its divisors is an integer number (2763648).

Almost surely, 2^10440431 is an apocalyptic number.

10440431 is a deficient number, since it is larger than the sum of its proper divisors (614161).

10440431 is an equidigital number, since it uses as much as digits as its factorization.

10440431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614160.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 10440431 is about 3231.1655791680. The cubic root of 10440431 is about 218.5610705054.

Adding to 10440431 its reverse (13404401), we get a palindrome (23844832).

The spelling of 10440431 in words is "ten million, four hundred forty thousand, four hundred thirty-one".