1004055431 has 8 divisors (see below), whose sum is σ = 1009377264. Its totient is φ = 998746560.

The previous prime is 1004055419. The next prime is 1004055449. The reversal of 1004055431 is 1345504001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1004055431 is a prime.

It is a super-2 number, since 2×1004055431² = 2016254617041191522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1004055397 and 1004055406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004055131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177905 + ... + 183461.

It is an arithmetic number, because the mean of its divisors is an integer number (126172158).

Almost surely, 2^1004055431 is an apocalyptic number.

1004055431 is a deficient number, since it is larger than the sum of its proper divisors (5321833).

1004055431 is an equidigital number, since it uses as much as digits as its factorization.

1004055431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6481.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1004055431 is about 31686.8337168610. The cubic root of 1004055431 is about 1001.3499870482.

Adding to 1004055431 its reverse (1345504001), we get a palindrome (2349559432).

The spelling of 1004055431 in words is "one billion, four million, fifty-five thousand, four hundred thirty-one".