311212320103 has 8 divisors (see below), whose sum is σ = 315547202880. Its totient is φ = 306887324640.

The previous prime is 311212320059. The next prime is 311212320121. The reversal of 311212320103 is 301023212113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311212320103 - 2³³ = 302622385511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311212320203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2408428 + ... + 2534353.

It is an arithmetic number, because the mean of its divisors is an integer number (39443400360).

Almost surely, 2^311212320103 is an apocalyptic number.

311212320103 is a deficient number, since it is larger than the sum of its proper divisors (4334882777).

311212320103 is an equidigital number, since it uses as much as digits as its factorization.

311212320103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943657.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311212320103 its reverse (301023212113), we get a palindrome (612235532216).

The spelling of 311212320103 in words is "three hundred eleven billion, two hundred twelve million, three hundred twenty thousand, one hundred three".