1232135256 has 192 divisors, whose sum is σ = 3612067200. Its totient is φ = 348986880.

The previous prime is 1232135251. The next prime is 1232135257. The reversal of 1232135256 is 6525312321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232135251) 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 47 ways as a sum of consecutive naturals, for example, 7559031 + ... + 7559193.

It is an arithmetic number, because the mean of its divisors is an integer number (18812850).

Almost surely, 2^1232135256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1232135256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1806033600).

1232135256 is an abundant number, since it is smaller than the sum of its proper divisors (2379931944).

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

1232135256 is a wasteful number, since it uses less digits than its factorization.

1232135256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 335 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 1232135256 is about 35101.7842281557. The cubic root of 1232135256 is about 1072.0609116462.

Adding to 1232135256 its reverse (6525312321), we get a palindrome (7757447577).

The spelling of 1232135256 in words is "one billion, two hundred thirty-two million, one hundred thirty-five thousand, two hundred fifty-six".