940531 has 2 divisors, whose sum is σ = 940532. Its totient is φ = 940530.

The previous prime is 940529. The next prime is 940543. The reversal of 940531 is 135049.

It is a weak prime.

It is an emirp because it is prime and its reverse (135049) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 940531 - 2¹ = 940529 is a prime.

It is a super-2 number, since 2×940531² = 1769197123922, which contains 22 as substring.

Together with 940529, it forms a pair of twin primes.

940531 is a lucky number.

It is a zygodrome in base 5.

It is not a weakly prime, because it can be changed into another prime (940501) 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 as a sum of consecutive naturals, namely, 470265 + 470266.

It is an arithmetic number, because the mean of its divisors is an integer number (470266).

2⁹⁴⁰⁵³¹ is an apocalyptic number.

940531 is a deficient number, since it is larger than the sum of its proper divisors (1).

940531 is an equidigital number, since it uses as much as digits as its factorization.

940531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 940531 is about 969.8097751621. The cubic root of 940531 is about 97.9770527974.

The spelling of 940531 in words is "nine hundred forty thousand, five hundred thirty-one".