7240031 has 2 divisors, whose sum is σ = 7240032. Its totient is φ = 7240030.

The previous prime is 7240001. The next prime is 7240033. The reversal of 7240031 is 1300427.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7240031 - 2¹⁴ = 7223647 is a prime.

It is a super-2 number, since 2×7240031² = 104836097761922, which contains 22 as substring.

Together with 7240033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7239991 and 7240009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7240033) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3620015 + 3620016.

It is an arithmetic number, because the mean of its divisors is an integer number (3620016).

Almost surely, 2^7240031 is an apocalyptic number.

7240031 is a deficient number, since it is larger than the sum of its proper divisors (1).

7240031 is an equidigital number, since it uses as much as digits as its factorization.

7240031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 7240031 is about 2690.7305699382. The cubic root of 7240031 is about 193.4550815263.

Adding to 7240031 its reverse (1300427), we get a palindrome (8540458).

The spelling of 7240031 in words is "seven million, two hundred forty thousand, thirty-one".