1313222033 has 4 divisors (see below), whose sum is σ = 1314362148. Its totient is φ = 1312081920.

The previous prime is 1313222023. The next prime is 1313222047. The reversal of 1313222033 is 3302223131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3302223131 = 1153 ⋅2864027.

It can be written as a sum of positive squares in 2 ways, for example, as 378574849 + 934647184 = 19457^2 + 30572^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313222033 - 2⁴ = 1313222017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313221996 and 1313222014.

It is not an unprimeable number, because it can be changed into a prime (1313222003) 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, 568328 + ... + 570633.

It is an arithmetic number, because the mean of its divisors is an integer number (328590537).

Almost surely, 2^1313222033 is an apocalyptic number.

It is an amenable number.

1313222033 is a deficient number, since it is larger than the sum of its proper divisors (1140115).

1313222033 is a wasteful number, since it uses less digits than its factorization.

1313222033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140114.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1313222033 is about 36238.4054974829. The cubic root of 1313222033 is about 1095.0805200618.

Adding to 1313222033 its reverse (3302223131), we get a palindrome (4615445164).

The spelling of 1313222033 in words is "one billion, three hundred thirteen million, two hundred twenty-two thousand, thirty-three".