231231383132133 has 32 divisors (see below), whose sum is σ = 319925228273280. Its totient is φ = 148439127156480.

The previous prime is 231231383132129. The next prime is 231231383132137. The reversal of 231231383132133 is 331231383132132.

It is an interprime number because it is at equal distance from previous prime (231231383132129) and next prime (231231383132137).

It is not a de Polignac number, because 231231383132133 - 2² = 231231383132129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231231383132091 and 231231383132100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231231383132137) 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, 18747498 + ... + 28529483.

It is an arithmetic number, because the mean of its divisors is an integer number (9997663383540).

Almost surely, 2^{231231383132133} is an apocalyptic number.

It is an amenable number.

231231383132133 is a deficient number, since it is larger than the sum of its proper divisors (88693845141147).

231231383132133 is a wasteful number, since it uses less digits than its factorization.

231231383132133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47277477.

The product of its digits is 139968, while the sum is 39.

Subtracting 231231383132133 from its reverse (331231383132132), we obtain a palindrome (99999999999999).

The spelling of 231231383132133 in words is "two hundred thirty-one trillion, two hundred thirty-one billion, three hundred eighty-three million, one hundred thirty-two thousand, one hundred thirty-three".