303120212313 has 4 divisors (see below), whose sum is σ = 404160283088. Its totient is φ = 202080141540.

The previous prime is 303120212299. The next prime is 303120212323. The reversal of 303120212313 is 313212021303.

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: 313212021303 = 3 ⋅104404007101.

It is not a de Polignac number, because 303120212313 - 2¹⁸ = 303119950169 is a prime.

It is a super-2 number, since 2×303120212313² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 303120212313.

It is not an unprimeable number, because it can be changed into a prime (303120212323) 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, 50520035383 + ... + 50520035388.

It is an arithmetic number, because the mean of its divisors is an integer number (101040070772).

Almost surely, 2^303120212313 is an apocalyptic number.

It is an amenable number.

303120212313 is a deficient number, since it is larger than the sum of its proper divisors (101040070775).

303120212313 is a wasteful number, since it uses less digits than its factorization.

303120212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101040070774.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 303120212313 its reverse (313212021303), we get a palindrome (616332233616).

The spelling of 303120212313 in words is "three hundred three billion, one hundred twenty million, two hundred twelve thousand, three hundred thirteen".