1003312321 has 4 divisors (see below), whose sum is σ = 1094522544. Its totient is φ = 912102100.

The previous prime is 1003312283. The next prime is 1003312339. The reversal of 1003312321 is 1232133001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1003312321 - 2²⁷ = 869094593 is a prime.

It is a super-2 number, since 2×1003312321² = 2013271226940814082, 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 = 1003312295 and 1003312304.

It is not an unprimeable number, because it can be changed into a prime (1003312351) 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, 45605095 + ... + 45605116.

It is an arithmetic number, because the mean of its divisors is an integer number (273630636).

Almost surely, 2^1003312321 is an apocalyptic number.

1003312321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1003312321 is a deficient number, since it is larger than the sum of its proper divisors (91210223).

1003312321 is an equidigital number, since it uses as much as digits as its factorization.

1003312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91210222.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1003312321 is about 31675.1056983240. The cubic root of 1003312321 is about 1001.1028901861.

Adding to 1003312321 its reverse (1232133001), we get a palindrome (2235445322).

The spelling of 1003312321 in words is "one billion, three million, three hundred twelve thousand, three hundred twenty-one".