531040007 has 2 divisors, whose sum is σ = 531040008. Its totient is φ = 531040006.

The previous prime is 531040001. The next prime is 531040009. The reversal of 531040007 is 700040135.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531040007 is a prime.

Together with 531040009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531040001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265520003 + 265520004.

It is an arithmetic number, because the mean of its divisors is an integer number (265520004).

Almost surely, 2^531040007 is an apocalyptic number.

531040007 is a deficient number, since it is larger than the sum of its proper divisors (1).

531040007 is an equidigital number, since it uses as much as digits as its factorization.

531040007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 531040007 is about 23044.3053052159. The cubic root of 531040007 is about 809.7962231889.

The spelling of 531040007 in words is "five hundred thirty-one million, forty thousand, seven".