312321112103 has 24 divisors (see below), whose sum is σ = 426828462480. Its totient is φ = 224646549120.

The previous prime is 312321112099. The next prime is 312321112123. The reversal of 312321112103 is 301211123213.

It is a happy number.

It is not a de Polignac number, because 312321112103 - 2² = 312321112099 is a prime.

It is a super-3 number, since 3×312321112103³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312321112123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22279358 + ... + 22293371.

It is an arithmetic number, because the mean of its divisors is an integer number (17784519270).

Almost surely, 2^312321112103 is an apocalyptic number.

312321112103 is a deficient number, since it is larger than the sum of its proper divisors (114507350377).

312321112103 is a wasteful number, since it uses less digits than its factorization.

312321112103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44572767 (or 44572760 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312321112103 its reverse (301211123213), we get a palindrome (613532235316).

It can be divided in two parts, 312321 and 112103, that added together give a palindrome (424424).

The spelling of 312321112103 in words is "three hundred twelve billion, three hundred twenty-one million, one hundred twelve thousand, one hundred three".