1203313013 has 4 divisors (see below), whose sum is σ = 1375214880. Its totient is φ = 1031411148.

The previous prime is 1203312973. The next prime is 1203313043. The reversal of 1203313013 is 3103133021.

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.

It is a cyclic number.

It is not a de Polignac number, because 1203313013 - 2¹⁶ = 1203247477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203312982 and 1203313000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203313043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85950923 + ... + 85950936.

It is an arithmetic number, because the mean of its divisors is an integer number (343803720).

Almost surely, 2^1203313013 is an apocalyptic number.

It is an amenable number.

1203313013 is a deficient number, since it is larger than the sum of its proper divisors (171901867).

1203313013 is an equidigital number, since it uses as much as digits as its factorization.

1203313013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171901866.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1203313013 is about 34688.8024151887. The cubic root of 1203313013 is about 1063.6356154799.

Adding to 1203313013 its reverse (3103133021), we get a palindrome (4306446034).

It can be divided in two parts, 120 and 3313013, that added together give a palindrome (3313133).

The spelling of 1203313013 in words is "one billion, two hundred three million, three hundred thirteen thousand, thirteen".