315231131071 has 2 divisors, whose sum is σ = 315231131072. Its totient is φ = 315231131070.

The previous prime is 315231131003. The next prime is 315231131099. The reversal of 315231131071 is 170131132513.

It is an a-pointer prime, because the next prime (315231131099) can be obtained adding 315231131071 to its sum of digits (28).

It is a strong prime.

It is an emirp because it is prime and its reverse (170131132513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315231131071 - 2⁹ = 315231130559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315231132071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157615565535 + 157615565536.

It is an arithmetic number, because the mean of its divisors is an integer number (157615565536).

Almost surely, 2^315231131071 is an apocalyptic number.

315231131071 is a deficient number, since it is larger than the sum of its proper divisors (1).

315231131071 is an equidigital number, since it uses as much as digits as its factorization.

315231131071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

Adding to 315231131071 its reverse (170131132513), we get a palindrome (485362263584).

The spelling of 315231131071 in words is "three hundred fifteen billion, two hundred thirty-one million, one hundred thirty-one thousand, seventy-one".