8011431997 has 8 divisors (see below), whose sum is σ = 8168738400. Its totient is φ = 7854843024.

The previous prime is 8011431971. The next prime is 8011432043. The reversal of 8011431997 is 7991341108.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8011431997 - 2²⁷ = 7877214269 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 (8011431097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156778 + ... + 201499.

It is an arithmetic number, because the mean of its divisors is an integer number (1021092300).

Almost surely, 2^8011431997 is an apocalyptic number.

It is an amenable number.

8011431997 is a deficient number, since it is larger than the sum of its proper divisors (157306403).

8011431997 is a wasteful number, since it uses less digits than its factorization.

8011431997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358715.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 8011431997 is about 89506.6030916155. The cubic root of 8011431997 is about 2000.9522129899.

The spelling of 8011431997 in words is "eight billion, eleven million, four hundred thirty-one thousand, nine hundred ninety-seven".