123203001231 has 12 divisors (see below), whose sum is σ = 178704495840. Its totient is φ = 81791670240.

The previous prime is 123203001211. The next prime is 123203001277. The reversal of 123203001231 is 132100302321.

123203001231 is a `hidden beast` number, since 1 + 2 + 320 + 300 + 12 + 31 = 666.

It is not a de Polignac number, because 123203001231 - 2¹⁷ = 123202870159 is a prime.

It is a super-3 number, since 3×123203001231³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203001211) 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 11 ways as a sum of consecutive naturals, for example, 28636390 + ... + 28640691.

It is an arithmetic number, because the mean of its divisors is an integer number (14892041320).

Almost surely, 2^123203001231 is an apocalyptic number.

123203001231 is a deficient number, since it is larger than the sum of its proper divisors (55501494609).

123203001231 is a wasteful number, since it uses less digits than its factorization.

123203001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57277326 (or 57277323 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123203001231 its reverse (132100302321), we get a palindrome (255303303552).

The spelling of 123203001231 in words is "one hundred twenty-three billion, two hundred three million, one thousand, two hundred thirty-one".