231533533143113 has 2 divisors, whose sum is σ = 231533533143114. Its totient is φ = 231533533143112.

The previous prime is 231533533143109. The next prime is 231533533143167. The reversal of 231533533143113 is 311341335335132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222126473672464 + 9407059470649 = 14903908^2 + 3067093^2 .

It is a cyclic number.

It is not a de Polignac number, because 231533533143113 - 2² = 231533533143109 is a prime.

It is not a weakly prime, because it can be changed into another prime (231533533143013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115766766571556 + 115766766571557.

It is an arithmetic number, because the mean of its divisors is an integer number (115766766571557).

Almost surely, 2^{231533533143113} is an apocalyptic number.

It is an amenable number.

231533533143113 is a deficient number, since it is larger than the sum of its proper divisors (1).

231533533143113 is an equidigital number, since it uses as much as digits as its factorization.

231533533143113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 41.

Adding to 231533533143113 its reverse (311341335335132), we get a palindrome (542874868478245).

The spelling of 231533533143113 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 thirteen".