1230123231 has 24 divisors (see below), whose sum is σ = 1820778960. Its totient is φ = 799860096.

The previous prime is 1230123227. The next prime is 1230123277. The reversal of 1230123231 is 1323210321.

It is not a de Polignac number, because 1230123231 - 2² = 1230123227 is a prime.

It is a super-2 number, since 2×1230123231² = 3026406326891758722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230123211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329805 + ... + 333513.

It is an arithmetic number, because the mean of its divisors is an integer number (75865790).

Almost surely, 2^1230123231 is an apocalyptic number.

1230123231 is a deficient number, since it is larger than the sum of its proper divisors (590655729).

1230123231 is a wasteful number, since it uses less digits than its factorization.

1230123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615 (or 4612 counting only the distinct ones).

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

The square root of 1230123231 is about 35073.1126505761. The cubic root of 1230123231 is about 1071.4770502788.

Adding to 1230123231 its reverse (1323210321), we get a palindrome (2553333552).

The spelling of 1230123231 in words is "one billion, two hundred thirty million, one hundred twenty-three thousand, two hundred thirty-one".