231201013121133 has 96 divisors (see below), whose sum is σ = 346487332147200. Its totient is φ = 135931459797120.

The previous prime is 231201013121107. The next prime is 231201013121153. The reversal of 231201013121133 is 331121310102132.

It is not a de Polignac number, because 231201013121133 - 2¹³ = 231201013112941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231201013121153) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 183638611858 + ... + 183638613116.

It is an arithmetic number, because the mean of its divisors is an integer number (3609243043200).

Almost surely, 2^{231201013121133} is an apocalyptic number.

It is an amenable number.

231201013121133 is a deficient number, since it is larger than the sum of its proper divisors (115286319026067).

231201013121133 is a wasteful number, since it uses less digits than its factorization.

231201013121133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3335 (or 2076 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 231201013121133 its reverse (331121310102132), we get a palindrome (562322323223265).

The spelling of 231201013121133 in words is "two hundred thirty-one trillion, two hundred one billion, thirteen million, one hundred twenty-one thousand, one hundred thirty-three".