1303333013 has 4 divisors (see below), whose sum is σ = 1321689888. Its totient is φ = 1284976140.

The previous prime is 1303332971. The next prime is 1303333027. The reversal of 1303333013 is 3103333031.

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: 3103333031 = 2897 ⋅1071223.

It is a cyclic number.

It is not a de Polignac number, because 1303333013 - 2¹⁰ = 1303331989 is a prime.

It is a super-3 number, since 3×1303333013³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303333043) 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, 9178331 + ... + 9178472.

It is an arithmetic number, because the mean of its divisors is an integer number (330422472).

Almost surely, 2^1303333013 is an apocalyptic number.

It is an amenable number.

1303333013 is a deficient number, since it is larger than the sum of its proper divisors (18356875).

1303333013 is an equidigital number, since it uses as much as digits as its factorization.

1303333013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18356874.

The product of its (nonzero) digits is 729, while the sum is 20.

The square root of 1303333013 is about 36101.7037409594. The cubic root of 1303333013 is about 1092.3248118570.

Adding to 1303333013 its reverse (3103333031), we get a palindrome (4406666044).

The spelling of 1303333013 in words is "one billion, three hundred three million, three hundred thirty-three thousand, thirteen".