2040731 has 16 divisors (see below), whose sum is σ = 2695680. Its totient is φ = 1495680.

The previous prime is 2040719. The next prime is 2040743. The reversal of 2040731 is 1370402.

2040731 = 294² + 295² + ... + 315².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2040719) and next prime (2040743).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040731 is a prime.

It is a super-2 number, since 2×2040731² = 8329166028722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2040781) 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 15 ways as a sum of consecutive naturals, for example, 530 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (168480).

2^2040731 is an apocalyptic number.

2040731 is a deficient number, since it is larger than the sum of its proper divisors (654949).

2040731 is a wasteful number, since it uses less digits than its factorization.

2040731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 2040731 is about 1428.5415639736. The cubic root of 2040731 is about 126.8416610211.

The spelling of 2040731 in words is "two million, forty thousand, seven hundred thirty-one".