1232323431440 has 40 divisors (see below), whose sum is σ = 2865198365568. Its totient is φ = 492921392000.

The previous prime is 1232323431433. The next prime is 1232323431457. The reversal of 1232323431440 is 441343232321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1232323431397 and 1232323431406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8943065 + ... + 9079815.

Almost surely, 2^{1232323431440} is an apocalyptic number.

1232323431440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232323431440 is an abundant number, since it is smaller than the sum of its proper divisors (1632874934128).

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

1232323431440 is a wasteful number, since it uses less digits than its factorization.

1232323431440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249407 (or 249401 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 1232323431440 its reverse (441343232321), we get a palindrome (1673666663761).

The spelling of 1232323431440 in words is "one trillion, two hundred thirty-two billion, three hundred twenty-three million, four hundred thirty-one thousand, four hundred forty".