2040531 has 4 divisors (see below), whose sum is σ = 2720712. Its totient is φ = 1360352.

The previous prime is 2040497. The next prime is 2040539. The reversal of 2040531 is 1350402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2040531 - 2⁷ = 2040403 is a prime.

It is a super-2 number, since 2×2040531² = 8327533523922, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2040531.

It is not an unprimeable number, because it can be changed into a prime (2040539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340086 + ... + 340091.

It is an arithmetic number, because the mean of its divisors is an integer number (680178).

2^2040531 is an apocalyptic number.

2040531 is a deficient number, since it is larger than the sum of its proper divisors (680181).

2040531 is an equidigital number, since it uses as much as digits as its factorization.

2040531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680180.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2040531 is about 1428.4715607950. The cubic root of 2040531 is about 126.8375172183.

Adding to 2040531 its reverse (1350402), we get a palindrome (3390933).

The spelling of 2040531 in words is "two million, forty thousand, five hundred thirty-one".