6993431 has 4 divisors (see below), whose sum is σ = 7024200. Its totient is φ = 6962664.

The previous prime is 6993421. The next prime is 6993451. The reversal of 6993431 is 1343996.

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 6993431 - 2⁶ = 6993367 is a prime.

It is a super-2 number, since 2×6993431² = 97816154303522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6993391 and 6993400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6993401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15041 + ... + 15498.

It is an arithmetic number, because the mean of its divisors is an integer number (1756050).

Almost surely, 2^6993431 is an apocalyptic number.

6993431 is a deficient number, since it is larger than the sum of its proper divisors (30769).

6993431 is a wasteful number, since it uses less digits than its factorization.

6993431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30768.

The product of its digits is 17496, while the sum is 35.

The square root of 6993431 is about 2644.5095953692. The cubic root of 6993431 is about 191.2332612402.

The spelling of 6993431 in words is "six million, nine hundred ninety-three thousand, four hundred thirty-one".