231015138125053 has 2 divisors, whose sum is σ = 231015138125054. Its totient is φ = 231015138125052.

The previous prime is 231015138125017. The next prime is 231015138125077. The reversal of 231015138125053 is 350521831510132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221559593074884 + 9455545050169 = 14884878^2 + 3074987^2 .

It is a cyclic number.

It is not a de Polignac number, because 231015138125053 - 2²¹ = 231015136027901 is a prime.

It is a super-2 number, since 2×231015138125053² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231015138124997 and 231015138125015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231015138125153) 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, 115507569062526 + 115507569062527.

It is an arithmetic number, because the mean of its divisors is an integer number (115507569062527).

Almost surely, 2^{231015138125053} is an apocalyptic number.

It is an amenable number.

231015138125053 is a deficient number, since it is larger than the sum of its proper divisors (1).

231015138125053 is an equidigital number, since it uses as much as digits as its factorization.

231015138125053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 40.

Adding to 231015138125053 its reverse (350521831510132), we get a palindrome (581536969635185).

The spelling of 231015138125053 in words is "two hundred thirty-one trillion, fifteen billion, one hundred thirty-eight million, one hundred twenty-five thousand, fifty-three".