123112012303 has 12 divisors (see below), whose sum is σ = 143319929952. Its totient is φ = 105445005120.

The previous prime is 123112012273. The next prime is 123112012313. The reversal of 123112012303 is 303210211321.

It is not a de Polignac number, because 123112012303 - 2¹³ = 123112004111 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 (123112012313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 881658 + ... + 1011703.

It is an arithmetic number, because the mean of its divisors is an integer number (11943327496).

Almost surely, 2^123112012303 is an apocalyptic number.

123112012303 is a deficient number, since it is larger than the sum of its proper divisors (20207917649).

123112012303 is a wasteful number, since it uses less digits than its factorization.

123112012303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894702 (or 1894695 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123112012303 its reverse (303210211321), we get a palindrome (426322223624).

The spelling of 123112012303 in words is "one hundred twenty-three billion, one hundred twelve million, twelve thousand, three hundred three".