231231012113 has 8 divisors (see below), whose sum is σ = 232784301120. Its totient is φ = 229679731440.

The previous prime is 231231012109. The next prime is 231231012167. The reversal of 231231012113 is 311210132132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231231012113 - 2² = 231231012109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231231012413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270683 + ... + 731936.

It is an arithmetic number, because the mean of its divisors is an integer number (29098037640).

Almost surely, 2^231231012113 is an apocalyptic number.

It is an amenable number.

231231012113 is a deficient number, since it is larger than the sum of its proper divisors (1553289007).

231231012113 is a wasteful number, since it uses less digits than its factorization.

231231012113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004167.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231231012113 its reverse (311210132132), we get a palindrome (542441144245).

The spelling of 231231012113 in words is "two hundred thirty-one billion, two hundred thirty-one million, twelve thousand, one hundred thirteen".