999999999913331 has 4 divisors (see below), whose sum is σ = 1043478260779152. Its totient is φ = 956521739047512.

The previous prime is 999999999913301. The next prime is 999999999913361. The reversal of 999999999913331 is 133319999999999.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (999999999913301) and next prime (999999999913361).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999999999913331 is a prime.

It is a super-2 number, since 2×999999999913331² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999999999913301) 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, 21739130432876 + ... + 21739130432921.

It is an arithmetic number, because the mean of its divisors is an integer number (260869565194788).

Almost surely, 2^{999999999913331} is an apocalyptic number.

999999999913331 is a deficient number, since it is larger than the sum of its proper divisors (43478260865821).

999999999913331 is a wasteful number, since it uses less digits than its factorization.

999999999913331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43478260865820.

The product of its digits is 94143178827, while the sum is 101.

The spelling of 999999999913331 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred thirteen thousand, three hundred thirty-one".