123203012311 has 8 divisors (see below), whose sum is σ = 129753151920. Its totient is φ = 116659449792.

The previous prime is 123203012297. The next prime is 123203012333. The reversal of 123203012311 is 113210302321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123203012311 - 2⁷ = 123203012183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203012341) 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 7 ways as a sum of consecutive naturals, for example, 1605790 + ... + 1680763.

It is an arithmetic number, because the mean of its divisors is an integer number (16219143990).

Almost surely, 2^123203012311 is an apocalyptic number.

123203012311 is a deficient number, since it is larger than the sum of its proper divisors (6550139609).

123203012311 is a wasteful number, since it uses less digits than its factorization.

123203012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288545.

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

Adding to 123203012311 its reverse (113210302321), we get a palindrome (236413314632).

The spelling of 123203012311 in words is "one hundred twenty-three billion, two hundred three million, twelve thousand, three hundred eleven".