231231320000011 has 4 divisors (see below), whose sum is σ = 231298207859992. Its totient is φ = 231164432140032.

The previous prime is 231231319999973. The next prime is 231231320000027. The reversal of 231231320000011 is 110000023132132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231231320000011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231231320000081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33443924805 + ... + 33443931718.

It is an arithmetic number, because the mean of its divisors is an integer number (57824551964998).

Almost surely, 2^{231231320000011} is an apocalyptic number.

231231320000011 is a deficient number, since it is larger than the sum of its proper divisors (66887859981).

231231320000011 is an equidigital number, since it uses as much as digits as its factorization.

231231320000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66887859980.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231231320000011 its reverse (110000023132132), we get a palindrome (341231343132143).

The spelling of 231231320000011 in words is "two hundred thirty-one trillion, two hundred thirty-one billion, three hundred twenty million, eleven", and thus it is an aban number.