9993421031 has 4 divisors (see below), whose sum is σ = 10901913864. Its totient is φ = 9084928200.

The previous prime is 9993421021. The next prime is 9993421043. The reversal of 9993421031 is 1301243999.

9993421031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9993421031 is a prime.

It is a super-2 number, since 2×9993421031² (a number of 21 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 9993421031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9993421021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454246400 + ... + 454246421.

It is an arithmetic number, because the mean of its divisors is an integer number (2725478466).

Almost surely, 2^9993421031 is an apocalyptic number.

9993421031 is a deficient number, since it is larger than the sum of its proper divisors (908492833).

9993421031 is a wasteful number, since it uses less digits than its factorization.

9993421031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908492832.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 9993421031 is about 99967.0997428654. The cubic root of 9993421031 is about 2153.9621210816.

The spelling of 9993421031 in words is "nine billion, nine hundred ninety-three million, four hundred twenty-one thousand, thirty-one".