231443432012 has 24 divisors (see below), whose sum is σ = 436531200000. Its totient is φ = 106734491136.

The previous prime is 231443431951. The next prime is 231443432057. The reversal of 231443432012 is 210234344132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1716812 + ... + 1846707.

It is an arithmetic number, because the mean of its divisors is an integer number (18188800000).

Almost surely, 2^231443432012 is an apocalyptic number.

It is an amenable number.

231443432012 is a deficient number, since it is larger than the sum of its proper divisors (205087767988).

231443432012 is a wasteful number, since it uses less digits than its factorization.

231443432012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564785 (or 3564783 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 231443432012 its reverse (210234344132), we get a palindrome (441677776144).

The spelling of 231443432012 in words is "two hundred thirty-one billion, four hundred forty-three million, four hundred thirty-two thousand, twelve".