99871293131 has 8 divisors (see below), whose sum is σ = 105131461200. Its totient is φ = 94611503520.

The previous prime is 99871293121. The next prime is 99871293139. The reversal of 99871293131 is 13139217899.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99871293131 is a prime.

It is a super-2 number, since 2×99871293131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99871293139) 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, 565061 + ... + 720441.

It is an arithmetic number, because the mean of its divisors is an integer number (13141432650).

Almost surely, 2^99871293131 is an apocalyptic number.

99871293131 is a deficient number, since it is larger than the sum of its proper divisors (5260168069).

99871293131 is a wasteful number, since it uses less digits than its factorization.

99871293131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189229.

The product of its digits is 734832, while the sum is 53.

The spelling of 99871293131 in words is "ninety-nine billion, eight hundred seventy-one million, two hundred ninety-three thousand, one hundred thirty-one".