1000531 has 8 divisors (see below), whose sum is σ = 1167200. Its totient is φ = 857304.

The previous prime is 1000507. The next prime is 1000537. The reversal of 1000531 is 1350001.

1000531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1000531 - 2⁷ = 1000403 is a prime.

It is a super-2 number, since 2×1000531² = 2002124563922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1116 + ... + 1801.

It is an arithmetic number, because the mean of its divisors is an integer number (145900).

2^1000531 is an apocalyptic number.

1000531 is a deficient number, since it is larger than the sum of its proper divisors (166669).

1000531 is an frugal number, since it uses more digits than its factorization.

1000531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938 (or 2924 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 10.

The square root of 1000531 is about 1000.2654647642. The cubic root of 1000531 is about 100.0176968680.

Adding to 1000531 its reverse (1350001), we get a palindrome (2350532).

The spelling of 1000531 in words is "one million, five hundred thirty-one", and thus it is an aban number.