123203333111 has 16 divisors (see below), whose sum is σ = 131329880064. Its totient is φ = 115308931584.

The previous prime is 123203333087. The next prime is 123203333131. The reversal of 123203333111 is 111333302321.

It is not a de Polignac number, because 123203333111 - 2²² = 123199138807 is a prime.

It is a super-2 number, since 2×123203333111² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203333131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4811735 + ... + 4837271.

It is an arithmetic number, because the mean of its divisors is an integer number (8208117504).

Almost surely, 2^123203333111 is an apocalyptic number.

123203333111 is a deficient number, since it is larger than the sum of its proper divisors (8126546953).

123203333111 is a wasteful number, since it uses less digits than its factorization.

123203333111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30070.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 123203333111 its reverse (111333302321), we get a palindrome (234536635432).

The spelling of 123203333111 in words is "one hundred twenty-three billion, two hundred three million, three hundred thirty-three thousand, one hundred eleven".