2043531 has 24 divisors (see below), whose sum is σ = 3411200. Its totient is φ = 1154736.

The previous prime is 2043523. The next prime is 2043539. The reversal of 2043531 is 1353402.

It is an interprime number because it is at equal distance from previous prime (2043523) and next prime (2043539).

It is not a de Polignac number, because 2043531 - 2³ = 2043523 is a prime.

It is a super-2 number, since 2×2043531² = 8352037895922, which contains 22 as substring.

It is a Duffinian number.

2043531 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2043539) 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 23 ways as a sum of consecutive naturals, for example, 10170 + ... + 10368.

2^2043531 is an apocalyptic number.

2043531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2043531 is a deficient number, since it is larger than the sum of its proper divisors (1367669).

2043531 is a wasteful number, since it uses less digits than its factorization.

2043531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2043531 is about 1429.5212485304. The cubic root of 2043531 is about 126.8996458548.

Adding to 2043531 its reverse (1353402), we get a palindrome (3396933).

The spelling of 2043531 in words is "two million, forty-three thousand, five hundred thirty-one".