1321130333 has 4 divisors (see below), whose sum is σ = 1398843900. Its totient is φ = 1243416768.

The previous prime is 1321130309. The next prime is 1321130341. The reversal of 1321130333 is 3330311231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 960814009 + 360316324 = 30997^2 + 18982^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321130333 - 2¹⁰ = 1321129309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321130303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38856758 + ... + 38856791.

It is an arithmetic number, because the mean of its divisors is an integer number (349710975).

Almost surely, 2^1321130333 is an apocalyptic number.

It is an amenable number.

1321130333 is a deficient number, since it is larger than the sum of its proper divisors (77713567).

1321130333 is an equidigital number, since it uses as much as digits as its factorization.

1321130333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77713566.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1321130333 is about 36347.3566164033. The cubic root of 1321130333 is about 1097.2743351871.

Adding to 1321130333 its reverse (3330311231), we get a palindrome (4651441564).

The spelling of 1321130333 in words is "one billion, three hundred twenty-one million, one hundred thirty thousand, three hundred thirty-three".