312321103 has 16 divisors (see below), whose sum is σ = 325148256. Its totient is φ = 299819520.

The previous prime is 312321077. The next prime is 312321109. The reversal of 312321103 is 301123213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312321103 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 (312321109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997675 + ... + 997987.

It is an arithmetic number, because the mean of its divisors is an integer number (20321766).

Almost surely, 2^312321103 is an apocalyptic number.

312321103 is a deficient number, since it is larger than the sum of its proper divisors (12827153).

312321103 is a wasteful number, since it uses less digits than its factorization.

312321103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 312321103 is about 17672.6088340120. The cubic root of 312321103 is about 678.4748857855.

Adding to 312321103 its reverse (301123213), we get a palindrome (613444316).

The spelling of 312321103 in words is "three hundred twelve million, three hundred twenty-one thousand, one hundred three".