1320023201 has 6 divisors (see below), whose sum is σ = 1535537250. Its totient is φ = 1131448416.

The previous prime is 1320023197. The next prime is 1320023209. The reversal of 1320023201 is 1023200231.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1144062976 + 175960225 = 33824^2 + 13265^2 .

It is not a de Polignac number, because 1320023201 - 2² = 1320023197 is a prime.

It is a super-2 number, since 2×1320023201² = 3484922502356572802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320023209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13469576 + ... + 13469673.

It is an arithmetic number, because the mean of its divisors is an integer number (255922875).

Almost surely, 2^1320023201 is an apocalyptic number.

It is an amenable number.

1320023201 is a deficient number, since it is larger than the sum of its proper divisors (215514049).

1320023201 is an equidigital number, since it uses as much as digits as its factorization.

1320023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26939263 (or 26939256 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1320023201 is about 36332.1235410208. The cubic root of 1320023201 is about 1096.9677373679.

Adding to 1320023201 its reverse (1023200231), we get a palindrome (2343223432).

The spelling of 1320023201 in words is "one billion, three hundred twenty million, twenty-three thousand, two hundred one".