317157431217023 has 4 divisors (see below), whose sum is σ = 318484449757920. Its totient is φ = 315830412676128.

The previous prime is 317157431216981. The next prime is 317157431217031. The reversal of 317157431217023 is 320712134751713.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 317157431217023 - 2⁶ = 317157431216959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317157431217073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663509270090 + ... + 663509270567.

It is an arithmetic number, because the mean of its divisors is an integer number (79621112439480).

Almost surely, 2^{317157431217023} is an apocalyptic number.

317157431217023 is a deficient number, since it is larger than the sum of its proper divisors (1327018540897).

317157431217023 is a wasteful number, since it uses less digits than its factorization.

317157431217023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327018540896.

The product of its (nonzero) digits is 740880, while the sum is 47.

Adding to 317157431217023 its reverse (320712134751713), we get a palindrome (637869565968736).

The spelling of 317157431217023 in words is "three hundred seventeen trillion, one hundred fifty-seven billion, four hundred thirty-one million, two hundred seventeen thousand, twenty-three".