231320240012 has 12 divisors (see below), whose sum is σ = 404844404496. Its totient is φ = 115650410160.

The previous prime is 231320239999. The next prime is 231320240083. The reversal of 231320240012 is 210042023132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2373728 + ... + 2469255.

It is an arithmetic number, because the mean of its divisors is an integer number (33737033708).

Almost surely, 2^231320240012 is an apocalyptic number.

It is an amenable number.

231320240012 is a deficient number, since it is larger than the sum of its proper divisors (173524164484).

231320240012 is a wasteful number, since it uses less digits than its factorization.

231320240012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4854928 (or 4854926 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 231320240012 its reverse (210042023132), we get a palindrome (441362263144).

The spelling of 231320240012 in words is "two hundred thirty-one billion, three hundred twenty million, two hundred forty thousand, twelve".