1231123332 has 24 divisors (see below), whose sum is σ = 2889827136. Its totient is φ = 407916448.

The previous prime is 1231123331. The next prime is 1231123337. The reversal of 1231123332 is 2333211321.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1231123299 and 1231123308.

It is not an unprimeable number, because it can be changed into a prime (1231123331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305163 + ... + 309170.

It is an arithmetic number, because the mean of its divisors is an integer number (120409464).

Almost surely, 2^1231123332 is an apocalyptic number.

1231123332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231123332 is an abundant number, since it is smaller than the sum of its proper divisors (1658703804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231123332 is a wasteful number, since it uses less digits than its factorization.

1231123332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614507 (or 614505 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 1231123332 is about 35087.3671283555. The cubic root of 1231123332 is about 1071.7673450425.

Adding to 1231123332 its reverse (2333211321), we get a palindrome (3564334653).

The spelling of 1231123332 in words is "one billion, two hundred thirty-one million, one hundred twenty-three thousand, three hundred thirty-two".