1330023261 has 8 divisors (see below), whose sum is σ = 2026702144. Its totient is φ = 760013280.

The previous prime is 1330023197. The next prime is 1330023293. The reversal of 1330023261 is 1623200331.

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

It is not a de Polignac number, because 1330023261 - 2⁶ = 1330023197 is a prime.

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: 63334441 = 1330023261 / (1 + 3 + 3 + 0 + 0 + 2 + 3 + 2 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330023361) 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 7 ways as a sum of consecutive naturals, for example, 31667200 + ... + 31667241.

It is an arithmetic number, because the mean of its divisors is an integer number (253337768).

Almost surely, 2^1330023261 is an apocalyptic number.

It is an amenable number.

1330023261 is a deficient number, since it is larger than the sum of its proper divisors (696678883).

1330023261 is an equidigital number, since it uses as much as digits as its factorization.

1330023261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63334451.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1330023261 is about 36469.4839694778. The cubic root of 1330023261 is about 1099.7308600495.

Adding to 1330023261 its reverse (1623200331), we get a palindrome (2953223592).

The spelling of 1330023261 in words is "one billion, three hundred thirty million, twenty-three thousand, two hundred sixty-one".