1320203231 has 8 divisors (see below), whose sum is σ = 1365840000. Its totient is φ = 1274757120.

The previous prime is 1320203191. The next prime is 1320203233. The reversal of 1320203231 is 1323020231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320203231 - 2⁶ = 1320203167 is a prime.

It is a super-2 number, since 2×1320203231² = 3485873142285678722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320203233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33506 + ... + 61343.

It is an arithmetic number, because the mean of its divisors is an integer number (170730000).

Almost surely, 2^1320203231 is an apocalyptic number.

1320203231 is a deficient number, since it is larger than the sum of its proper divisors (45636769).

1320203231 is an equidigital number, since it uses as much as digits as its factorization.

1320203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95329.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1320203231 is about 36334.6010161114. The cubic root of 1320203231 is about 1097.0176047046.

Adding to 1320203231 its reverse (1323020231), we get a palindrome (2643223462).

The spelling of 1320203231 in words is "one billion, three hundred twenty million, two hundred three thousand, two hundred thirty-one".