1004431 has 4 divisors (see below), whose sum is σ = 1036864. Its totient is φ = 972000.

The previous prime is 1004429. The next prime is 1004441. The reversal of 1004431 is 1344001.

1004431 = T₉₈ + T₉₉ + ... + T₁₉₀.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1344001 = 229 ⋅5869.

It is a 5-Lehmer number, since φ(1004431) divides (1004431-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 1004431 - 2¹ = 1004429 is a prime.

It is a super-2 number, since 2×1004431² = 2017763267522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004401) 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 3 ways as a sum of consecutive naturals, for example, 16170 + ... + 16231.

It is an arithmetic number, because the mean of its divisors is an integer number (259216).

2^1004431 is an apocalyptic number.

1004431 is a deficient number, since it is larger than the sum of its proper divisors (32433).

1004431 is an equidigital number, since it uses as much as digits as its factorization.

1004431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32432.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1004431 is about 1002.2130512022. The cubic root of 1004431 is about 100.1474823825.

Adding to 1004431 its reverse (1344001), we get a palindrome (2348432).

It can be divided in two parts, 10044 and 31, that multiplied together give a square (311364 = 558²).

The spelling of 1004431 in words is "one million, four thousand, four hundred thirty-one".