231533533143143 has 16 divisors (see below), whose sum is σ = 288668526307584. Its totient is φ = 180413651280960.

The previous prime is 231533533143113. The next prime is 231533533143167. The reversal of 231533533143143 is 341341335335132.

231533533143143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 231533533143143 - 2¹² = 231533533139047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231533533143094 and 231533533143103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231533533143113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10696430 + ... + 24030827.

It is an arithmetic number, because the mean of its divisors is an integer number (18041782894224).

Almost surely, 2^{231533533143143} is an apocalyptic number.

231533533143143 is a deficient number, since it is larger than the sum of its proper divisors (57134993164441).

231533533143143 is a wasteful number, since it uses less digits than its factorization.

231533533143143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34813862.

The product of its digits is 1749600, while the sum is 44.

Adding to 231533533143143 its reverse (341341335335132), we get a palindrome (572874868478275).

The spelling of 231533533143143 in words is "two hundred thirty-one trillion, five hundred thirty-three billion, five hundred thirty-three million, one hundred forty-three thousand, one hundred forty-three".