312123232103 has 4 divisors (see below), whose sum is σ = 313366751208. Its totient is φ = 310879713000.

The previous prime is 312123232081. The next prime is 312123232121. The reversal of 312123232103 is 301232321213.

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 312123232103 - 2⁶ = 312123232039 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 (312123232123) 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, 621759176 + ... + 621759677.

It is an arithmetic number, because the mean of its divisors is an integer number (78341687802).

Almost surely, 2^312123232103 is an apocalyptic number.

312123232103 is a deficient number, since it is larger than the sum of its proper divisors (1243519105).

312123232103 is a wasteful number, since it uses less digits than its factorization.

312123232103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243519104.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 312123232103 its reverse (301232321213), we get a palindrome (613355553316).

The spelling of 312123232103 in words is "three hundred twelve billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred three".