8131352099 has 4 divisors (see below), whose sum is σ = 8756840736. Its totient is φ = 7505863464.

The previous prime is 8131352087. The next prime is 8131352113. The reversal of 8131352099 is 9902531318.

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 8131352099 - 2⁴ = 8131352083 is a prime.

It is a super-2 number, since 2×8131352099² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8131352029) 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, 312744299 + ... + 312744324.

It is an arithmetic number, because the mean of its divisors is an integer number (2189210184).

Almost surely, 2^8131352099 is an apocalyptic number.

8131352099 is a deficient number, since it is larger than the sum of its proper divisors (625488637).

8131352099 is a wasteful number, since it uses less digits than its factorization.

8131352099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625488636.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 8131352099 is about 90174.0101082346. The cubic root of 8131352099 is about 2010.8866412484.

The spelling of 8131352099 in words is "eight billion, one hundred thirty-one million, three hundred fifty-two thousand, ninety-nine".