123203223231 has 32 divisors (see below), whose sum is σ = 184189282560. Its totient is φ = 72619219200.

The previous prime is 123203223229. The next prime is 123203223233. The reversal of 123203223231 is 132322302321.

It is an interprime number because it is at equal distance from previous prime (123203223229) and next prime (123203223233).

It is not a de Polignac number, because 123203223231 - 2¹ = 123203223229 is a prime.

It is a super-2 number, since 2×123203223231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203223233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164685 + ... + 522998.

It is an arithmetic number, because the mean of its divisors is an integer number (5755915080).

Almost surely, 2^123203223231 is an apocalyptic number.

123203223231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123203223231 is a deficient number, since it is larger than the sum of its proper divisors (60986059329).

123203223231 is a wasteful number, since it uses less digits than its factorization.

123203223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687847.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 123203223231 its reverse (132322302321), we get a palindrome (255525525552).

The spelling of 123203223231 in words is "one hundred twenty-three billion, two hundred three million, two hundred twenty-three thousand, two hundred thirty-one".