231333313133 has 32 divisors (see below), whose sum is σ = 267123225600. Its totient is φ = 198435234816.

The previous prime is 231333313103. The next prime is 231333313147. The reversal of 231333313133 is 331313333132.

It is a happy number.

It is not a de Polignac number, because 231333313133 - 2¹⁰ = 231333312109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231333313096 and 231333313105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231333313103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43818788 + ... + 43824066.

It is an arithmetic number, because the mean of its divisors is an integer number (8347600800).

Almost surely, 2^231333313133 is an apocalyptic number.

It is an amenable number.

231333313133 is a deficient number, since it is larger than the sum of its proper divisors (35789912467).

231333313133 is a wasteful number, since it uses less digits than its factorization.

231333313133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7781.

The product of its digits is 13122, while the sum is 29.

Adding to 231333313133 its reverse (331313333132), we get a palindrome (562646646265).

The spelling of 231333313133 in words is "two hundred thirty-one billion, three hundred thirty-three million, three hundred thirteen thousand, one hundred thirty-three".