831972318969 has 24 divisors (see below), whose sum is σ = 1226045906176. Its totient is φ = 501439831200.

The previous prime is 831972318967. The next prime is 831972318997. The reversal of 831972318969 is 969813279138.

It is not a de Polignac number, because 831972318969 - 2¹ = 831972318967 is a prime.

It is a super-2 number, since 2×831972318969² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (831972318967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6265609 + ... + 6397014.

Almost surely, 2^831972318969 is an apocalyptic number.

It is an amenable number.

831972318969 is a deficient number, since it is larger than the sum of its proper divisors (394073587207).

831972318969 is a wasteful number, since it uses less digits than its factorization.

831972318969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12662829 (or 12662818 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 66.

The spelling of 831972318969 in words is "eight hundred thirty-one billion, nine hundred seventy-two million, three hundred eighteen thousand, nine hundred sixty-nine".