231321300133 has 16 divisors (see below), whose sum is σ = 288514414080. Its totient is φ = 180179218800.

The previous prime is 231321300101. The next prime is 231321300157. The reversal of 231321300133 is 331003123132.

It is not a de Polignac number, because 231321300133 - 2⁵ = 231321300101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231321304133) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 396103 + ... + 787108.

It is an arithmetic number, because the mean of its divisors is an integer number (18032150880).

Almost surely, 2^231321300133 is an apocalyptic number.

It is an amenable number.

231321300133 is a deficient number, since it is larger than the sum of its proper divisors (57193113947).

231321300133 is a wasteful number, since it uses less digits than its factorization.

231321300133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185768.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 231321300133 its reverse (331003123132), we get a palindrome (562324423265).

The spelling of 231321300133 in words is "two hundred thirty-one billion, three hundred twenty-one million, three hundred thousand, one hundred thirty-three".