123001203231 has 12 divisors (see below), whose sum is σ = 177671569608. Its totient is φ = 81999341424.

The previous prime is 123001203211. The next prime is 123001203233. The reversal of 123001203231 is 132302100321.

123001203231 is a `hidden beast` number, since 1 + 230 + 0 + 1 + 203 + 231 = 666.

It is not a de Polignac number, because 123001203231 - 2⁹ = 123001202719 is a prime.

It is a super-2 number, since 2×123001203231² (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 (123001203233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712401 + ... + 868053.

It is an arithmetic number, because the mean of its divisors is an integer number (14805964134).

Almost surely, 2^123001203231 is an apocalyptic number.

123001203231 is a deficient number, since it is larger than the sum of its proper divisors (54670366377).

123001203231 is a wasteful number, since it uses less digits than its factorization.

123001203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243462 (or 243459 counting only the distinct ones).

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

Adding to 123001203231 its reverse (132302100321), we get a palindrome (255303303552).

The spelling of 123001203231 in words is "one hundred twenty-three billion, one million, two hundred three thousand, two hundred thirty-one".