312131320103 has 8 divisors (see below), whose sum is σ = 325771790976. Its totient is φ = 298496644600.

The previous prime is 312131320097. The next prime is 312131320121. The reversal of 312131320103 is 301023131213.

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 312131320103 - 2⁸ = 312131319847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312131320003) 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, 1338593 + ... + 1554378.

It is an arithmetic number, because the mean of its divisors is an integer number (40721473872).

Almost surely, 2^312131320103 is an apocalyptic number.

312131320103 is a deficient number, since it is larger than the sum of its proper divisors (13640470873).

312131320103 is a wasteful number, since it uses less digits than its factorization.

312131320103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897685.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 312131320103 its reverse (301023131213), we get a palindrome (613154451316).

The spelling of 312131320103 in words is "three hundred twelve billion, one hundred thirty-one million, three hundred twenty thousand, one hundred three".