9993131 has 4 divisors (see below), whose sum is σ = 10001064. Its totient is φ = 9985200.

The previous prime is 9993121. The next prime is 9993149. The reversal of 9993131 is 1313999.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9993131 - 2²² = 5798827 is a prime.

It is a super-2 number, since 2×9993131² = 199725334366322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9993091 and 9993100.

It is not an unprimeable number, because it can be changed into a prime (9993121) 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, 1610 + ... + 4751.

It is an arithmetic number, because the mean of its divisors is an integer number (2500266).

Almost surely, 2^9993131 is an apocalyptic number.

9993131 is a deficient number, since it is larger than the sum of its proper divisors (7933).

9993131 is a wasteful number, since it uses less digits than its factorization.

9993131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7932.

The product of its digits is 6561, while the sum is 35.

The square root of 9993131 is about 3161.1913893341. The cubic root of 9993131 is about 215.3941283311.

The spelling of 9993131 in words is "nine million, nine hundred ninety-three thousand, one hundred thirty-one".