999910233131 has 4 divisors (see below), whose sum is σ = 999921166032. Its totient is φ = 999899300232.

The previous prime is 999910233107. The next prime is 999910233139. The reversal of 999910233131 is 131332019999.

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 999910233131 - 2¹⁰ = 999910232107 is a prime.

It is a super-2 number, since 2×999910233131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999910233131.

It is not an unprimeable number, because it can be changed into a prime (999910233139) 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, 5328095 + ... + 5512568.

It is an arithmetic number, because the mean of its divisors is an integer number (249980291508).

Almost surely, 2^999910233131 is an apocalyptic number.

999910233131 is a deficient number, since it is larger than the sum of its proper divisors (10932901).

999910233131 is a wasteful number, since it uses less digits than its factorization.

999910233131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10932900.

The product of its (nonzero) digits is 354294, while the sum is 50.

The spelling of 999910233131 in words is "nine hundred ninety-nine billion, nine hundred ten million, two hundred thirty-three thousand, one hundred thirty-one".