1303112321 has 12 divisors (see below), whose sum is σ = 1595648880. Its totient is φ = 1058165640.

The previous prime is 1303112309. The next prime is 1303112323. The reversal of 1303112321 is 1232113031.

It is not a de Polignac number, because 1303112321 - 2¹⁸ = 1302850177 is a prime.

It is a super-2 number, since 2×1303112321² = 3396203442284014082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1303112321.

It is not an unprimeable number, because it can be changed into a prime (1303112323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 698915 + ... + 700776.

It is an arithmetic number, because the mean of its divisors is an integer number (132970740).

Almost surely, 2^1303112321 is an apocalyptic number.

It is an amenable number.

1303112321 is a deficient number, since it is larger than the sum of its proper divisors (292536559).

1303112321 is a wasteful number, since it uses less digits than its factorization.

1303112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399724 (or 1399717 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1303112321 is about 36098.6470799115. The cubic root of 1303112321 is about 1092.2631543085.

Adding to 1303112321 its reverse (1232113031), we get a palindrome (2535225352).

It can be divided in two parts, 13031 and 12321, that added together give a palindrome (25352).

The spelling of 1303112321 in words is "one billion, three hundred three million, one hundred twelve thousand, three hundred twenty-one".