1313313033 has 4 divisors (see below), whose sum is σ = 1751084048. Its totient is φ = 875542020.

The previous prime is 1313313031. The next prime is 1313313059. The reversal of 1313313033 is 3303133131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3303133131 = 3 ⋅1101044377.

It is not a de Polignac number, because 1313313033 - 2¹ = 1313313031 is a prime.

It is a super-2 number, since 2×1313313033² = 3449582245295318178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313313031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218885503 + ... + 218885508.

It is an arithmetic number, because the mean of its divisors is an integer number (437771012).

Almost surely, 2^1313313033 is an apocalyptic number.

It is an amenable number.

1313313033 is a deficient number, since it is larger than the sum of its proper divisors (437771015).

1313313033 is an equidigital number, since it uses as much as digits as its factorization.

1313313033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437771014.

The product of its (nonzero) digits is 729, while the sum is 21.

The square root of 1313313033 is about 36239.6610497394. The cubic root of 1313313033 is about 1095.1058140900.

Adding to 1313313033 its reverse (3303133131), we get a palindrome (4616446164).

The spelling of 1313313033 in words is "one billion, three hundred thirteen million, three hundred thirteen thousand, thirty-three".