3121312222303 has 4 divisors (see below), whose sum is σ = 3405067878888. Its totient is φ = 2837556565720.

The previous prime is 3121312222291. The next prime is 3121312222337. The reversal of 3121312222303 is 3032222131213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3121312222303 - 2³³ = 3112722287711 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 (3121312222393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141877828276 + ... + 141877828297.

It is an arithmetic number, because the mean of its divisors is an integer number (851266969722).

Almost surely, 2^{3121312222303} is an apocalyptic number.

3121312222303 is a deficient number, since it is larger than the sum of its proper divisors (283755656585).

3121312222303 is a wasteful number, since it uses less digits than its factorization.

3121312222303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283755656584.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 3121312222303 its reverse (3032222131213), we get a palindrome (6153534353516).

The spelling of 3121312222303 in words is "three trillion, one hundred twenty-one billion, three hundred twelve million, two hundred twenty-two thousand, three hundred three".