231023331121113 has 24 divisors (see below), whose sum is σ = 345328957888200. Its totient is φ = 148652256259584.

The previous prime is 231023331121111. The next prime is 231023331121129. The reversal of 231023331121113 is 311121133320132.

231023331121113 is a `hidden beast` number, since 2 + 3 + 1 + 0 + 233 + 311 + 2 + 1 + 113 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 37232793089424 + 193790538031689 = 6101868^2 + 13920867^2 .

It is not a de Polignac number, because 231023331121113 - 2¹ = 231023331121111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231023331121111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155260048 + ... + 156740961.

It is an arithmetic number, because the mean of its divisors is an integer number (14388706578675).

Almost surely, 2^{231023331121113} is an apocalyptic number.

It is an amenable number.

231023331121113 is a deficient number, since it is larger than the sum of its proper divisors (114305626767087).

231023331121113 is a wasteful number, since it uses less digits than its factorization.

231023331121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312003881 (or 312003878 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 231023331121113 its reverse (311121133320132), we get a palindrome (542144464441245).

The spelling of 231023331121113 in words is "two hundred thirty-one trillion, twenty-three billion, three hundred thirty-one million, one hundred twenty-one thousand, one hundred thirteen".