231513450031093 has 2 divisors, whose sum is σ = 231513450031094. Its totient is φ = 231513450031092.

The previous prime is 231513450031081. The next prime is 231513450031099. The reversal of 231513450031093 is 390130054315132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225354679665124 + 6158770365969 = 15011818^2 + 2481687^2 .

It is a cyclic number.

It is not a de Polignac number, because 231513450031093 - 2²¹ = 231513447933941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231513450031099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115756725015546 + 115756725015547.

It is an arithmetic number, because the mean of its divisors is an integer number (115756725015547).

Almost surely, 2^{231513450031093} is an apocalyptic number.

It is an amenable number.

231513450031093 is a deficient number, since it is larger than the sum of its proper divisors (1).

231513450031093 is an equidigital number, since it uses as much as digits as its factorization.

231513450031093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 231513450031093 in words is "two hundred thirty-one trillion, five hundred thirteen billion, four hundred fifty million, thirty-one thousand, ninety-three".