1231230432 has 24 divisors (see below), whose sum is σ = 3231980136. Its totient is φ = 410410112.

The previous prime is 1231230421. The next prime is 1231230433. The reversal of 1231230432 is 2340321321.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 1231230399 and 1231230408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231230433) 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 3 ways as a sum of consecutive naturals, for example, 6412563 + ... + 6412754.

It is an arithmetic number, because the mean of its divisors is an integer number (134665839).

Almost surely, 2^1231230432 is an apocalyptic number.

1231230432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231230432 is an abundant number, since it is smaller than the sum of its proper divisors (2000749704).

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

1231230432 is a wasteful number, since it uses less digits than its factorization.

1231230432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12825330 (or 12825322 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1231230432 is about 35088.8932854828. The cubic root of 1231230432 is about 1071.7984231512.

Adding to 1231230432 its reverse (2340321321), we get a palindrome (3571551753).

The spelling of 1231230432 in words is "one billion, two hundred thirty-one million, two hundred thirty thousand, four hundred thirty-two".