311222112103 has 16 divisors (see below), whose sum is σ = 356123579904. Its totient is φ = 266431160160.

The previous prime is 311222112053. The next prime is 311222112107. The reversal of 311222112103 is 301211222113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311222112103 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 (311222112107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20364301 + ... + 20379577.

It is an arithmetic number, because the mean of its divisors is an integer number (22257723744).

Almost surely, 2^311222112103 is an apocalyptic number.

311222112103 is a deficient number, since it is larger than the sum of its proper divisors (44901467801).

311222112103 is a wasteful number, since it uses less digits than its factorization.

311222112103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18702.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 311222112103 its reverse (301211222113), we get a palindrome (612433334216).

The spelling of 311222112103 in words is "three hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, one hundred three".