1320031323 has 20 divisors (see below), whose sum is σ = 2123584848. Its totient is φ = 812326320.

The previous prime is 1320031291. The next prime is 1320031337. The reversal of 1320031323 is 3231300231.

It is not a de Polignac number, because 1320031323 - 2⁵ = 1320031291 is a prime.

It is a super-2 number, since 2×1320031323² = 3484965387402260658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320031296 and 1320031305.

It is not an unprimeable number, because it can be changed into a prime (1320031343) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 625743 + ... + 627848.

Almost surely, 2^1320031323 is an apocalyptic number.

1320031323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1320031323 is a deficient number, since it is larger than the sum of its proper divisors (803553525).

1320031323 is a wasteful number, since it uses less digits than its factorization.

1320031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253616 (or 1253607 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1320031323 is about 36332.2353152129. The cubic root of 1320031323 is about 1096.9699872157.

Adding to 1320031323 its reverse (3231300231), we get a palindrome (4551331554).

The spelling of 1320031323 in words is "one billion, three hundred twenty million, thirty-one thousand, three hundred twenty-three".