123412656203 has 16 divisors (see below), whose sum is σ = 129478245120. Its totient is φ = 117406461216.

The previous prime is 123412656167. The next prime is 123412656217. The reversal of 123412656203 is 302656214321.

It is a cyclic number.

It is not a de Polignac number, because 123412656203 - 2²² = 123408461899 is a prime.

It is a super-2 number, since 2×123412656203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123412656223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5308601 + ... + 5331797.

It is an arithmetic number, because the mean of its divisors is an integer number (8092390320).

Almost surely, 2^123412656203 is an apocalyptic number.

123412656203 is a deficient number, since it is larger than the sum of its proper divisors (6065588917).

123412656203 is a wasteful number, since it uses less digits than its factorization.

123412656203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24466.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 123412656203 in words is "one hundred twenty-three billion, four hundred twelve million, six hundred fifty-six thousand, two hundred three".