1320333231 has 8 divisors (see below), whose sum is σ = 2011936384. Its totient is φ = 754476120.

The previous prime is 1320333187. The next prime is 1320333247. The reversal of 1320333231 is 1323330231.

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

It is not a de Polignac number, because 1320333231 - 2¹⁴ = 1320316847 is a prime.

It is a super-2 number, since 2×1320333231² = 3486559681765798722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 62873011 = 1320333231 / (1 + 3 + 2 + 0 + 3 + 3 + 3 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320333198 and 1320333207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320333281) 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, 31436485 + ... + 31436526.

It is an arithmetic number, because the mean of its divisors is an integer number (251492048).

Almost surely, 2^1320333231 is an apocalyptic number.

1320333231 is a deficient number, since it is larger than the sum of its proper divisors (691603153).

1320333231 is an equidigital number, since it uses as much as digits as its factorization.

1320333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62873021.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 1320333231 is about 36336.3899004841. The cubic root of 1320333231 is about 1097.0536111832.

Adding to 1320333231 its reverse (1323330231), we get a palindrome (2643663462).

The spelling of 1320333231 in words is "one billion, three hundred twenty million, three hundred thirty-three thousand, two hundred thirty-one".