1313322233 has 4 divisors (see below), whose sum is σ = 1390576500. Its totient is φ = 1236067968.

The previous prime is 1313322167. The next prime is 1313322239. The reversal of 1313322233 is 3322233131.

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 636906169 + 676416064 = 25237^2 + 26008^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313322233 - 2¹⁰ = 1313321209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313322199 and 1313322208.

It is not an unprimeable number, because it can be changed into a prime (1313322239) 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, 38627108 + ... + 38627141.

It is an arithmetic number, because the mean of its divisors is an integer number (347644125).

Almost surely, 2^1313322233 is an apocalyptic number.

It is an amenable number.

1313322233 is a deficient number, since it is larger than the sum of its proper divisors (77254267).

1313322233 is an equidigital number, since it uses as much as digits as its factorization.

1313322233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77254266.

The product of its digits is 1944, while the sum is 23.

The square root of 1313322233 is about 36239.7879822716. The cubic root of 1313322233 is about 1095.1083712235.

Adding to 1313322233 its reverse (3322233131), we get a palindrome (4635555364).

The spelling of 1313322233 in words is "one billion, three hundred thirteen million, three hundred twenty-two thousand, two hundred thirty-three".