231533531053171 has 2 divisors, whose sum is σ = 231533531053172. Its totient is φ = 231533531053170.

The previous prime is 231533531053109. The next prime is 231533531053193. The reversal of 231533531053171 is 171350135335132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231533531053171 - 2¹⁵ = 231533531020403 is a prime.

It is not a weakly prime, because it can be changed into another prime (231533531083171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115766765526585 + 115766765526586.

It is an arithmetic number, because the mean of its divisors is an integer number (115766765526586).

Almost surely, 2^{231533531053171} is an apocalyptic number.

231533531053171 is a deficient number, since it is larger than the sum of its proper divisors (1).

231533531053171 is an equidigital number, since it uses as much as digits as its factorization.

231533531053171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 425250, while the sum is 43.

The spelling of 231533531053171 in words is "two hundred thirty-one trillion, five hundred thirty-three billion, five hundred thirty-one million, fifty-three thousand, one hundred seventy-one".