1231324512 has 48 divisors (see below), whose sum is σ = 3526068672. Its totient is φ = 373128320.

The previous prime is 1231324511. The next prime is 1231324531. The reversal of 1231324512 is 2154231321.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231324511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581958 + ... + 584069.

It is an arithmetic number, because the mean of its divisors is an integer number (73459764).

Almost surely, 2^1231324512 is an apocalyptic number.

1231324512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231324512 is an abundant number, since it is smaller than the sum of its proper divisors (2294744160).

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

1231324512 is a wasteful number, since it uses less digits than its factorization.

1231324512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166051 (or 1166043 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1231324512 is about 35090.2338550201. The cubic root of 1231324512 is about 1071.8257216500.

Adding to 1231324512 its reverse (2154231321), we get a palindrome (3385555833).

The spelling of 1231324512 in words is "one billion, two hundred thirty-one million, three hundred twenty-four thousand, five hundred twelve".