232131220133 has 4 divisors (see below), whose sum is σ = 232360373388. Its totient is φ = 231902066880.

The previous prime is 232131220127. The next prime is 232131220147. The reversal of 232131220133 is 331022131232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14991063844 + 217140156289 = 122438^2 + 465983^2 .

It is a cyclic number.

It is not a de Polignac number, because 232131220133 - 2⁴ = 232131220117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232131220099 and 232131220108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232131220333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114575108 + ... + 114577133.

It is an arithmetic number, because the mean of its divisors is an integer number (58090093347).

Almost surely, 2^232131220133 is an apocalyptic number.

It is an amenable number.

232131220133 is a deficient number, since it is larger than the sum of its proper divisors (229153255).

232131220133 is a wasteful number, since it uses less digits than its factorization.

232131220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229153254.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 232131220133 its reverse (331022131232), we get a palindrome (563153351365).

The spelling of 232131220133 in words is "two hundred thirty-two billion, one hundred thirty-one million, two hundred twenty thousand, one hundred thirty-three".