6940231 has 4 divisors (see below), whose sum is σ = 6955200. Its totient is φ = 6925264.

The previous prime is 6940223. The next prime is 6940261. The reversal of 6940231 is 1320496.

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 6940231 - 2³ = 6940223 is a prime.

It is a super-2 number, since 2×6940231² = 96333612666722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6² + 9⁵ + 4⁵ + 0 + 2²¹ + 3¹⁴ + 1 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6940196 and 6940205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6940261) 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, 6766 + ... + 7723.

It is an arithmetic number, because the mean of its divisors is an integer number (1738800).

Almost surely, 2^6940231 is an apocalyptic number.

6940231 is a deficient number, since it is larger than the sum of its proper divisors (14969).

6940231 is a wasteful number, since it uses less digits than its factorization.

6940231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14968.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 6940231 is about 2634.4318172995. The cubic root of 6940231 is about 190.7471137669.

The spelling of 6940231 in words is "six million, nine hundred forty thousand, two hundred thirty-one".