9999973331 has 4 divisors (see below), whose sum is σ = 10000200000. Its totient is φ = 9999746664.

The previous prime is 9999973297. The next prime is 9999973351. The reversal of 9999973331 is 1333799999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1333799999 = 7 ⋅190542857.

It is a cyclic number.

It is not a de Polignac number, because 9999973331 - 2¹⁸ = 9999711187 is a prime.

It is a super-2 number, since 2×9999973331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9999973351) 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, 23336 + ... + 143333.

It is an arithmetic number, because the mean of its divisors is an integer number (2500050000).

Almost surely, 2^9999973331 is an apocalyptic number.

9999973331 is a deficient number, since it is larger than the sum of its proper divisors (226669).

9999973331 is a wasteful number, since it uses less digits than its factorization.

9999973331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226668.

The product of its digits is 11160261, while the sum is 62.

The square root of 9999973331 is about 99999.8666549111. The cubic root of 9999973331 is about 2154.4327748096.

The spelling of 9999973331 in words is "nine billion, nine hundred ninety-nine million, nine hundred seventy-three thousand, three hundred thirty-one".