1133311321 has 4 divisors (see below), whose sum is σ = 1133470372. Its totient is φ = 1133152272.

The previous prime is 1133311313. The next prime is 1133311367. The reversal of 1133311321 is 1231133311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1231133311 = 5521 ⋅222991.

It can be written as a sum of positive squares in 2 ways, for example, as 865006921 + 268304400 = 29411^2 + 16380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133311321 - 2³ = 1133311313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133311391) 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, 68310 + ... + 83263.

It is an arithmetic number, because the mean of its divisors is an integer number (283367593).

Almost surely, 2^1133311321 is an apocalyptic number.

It is an amenable number.

1133311321 is a deficient number, since it is larger than the sum of its proper divisors (159051).

1133311321 is an equidigital number, since it uses as much as digits as its factorization.

1133311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159050.

The product of its digits is 162, while the sum is 19.

The square root of 1133311321 is about 33664.6895277530. The cubic root of 1133311321 is about 1042.5968513746.

Adding to 1133311321 its reverse (1231133311), we get a palindrome (2364444632).

The spelling of 1133311321 in words is "one billion, one hundred thirty-three million, three hundred eleven thousand, three hundred twenty-one".