2543031 has 6 divisors (see below), whose sum is σ = 3673280. Its totient is φ = 1695348.

The previous prime is 2543027. The next prime is 2543033. The reversal of 2543031 is 1303452.

It is not a de Polignac number, because 2543031 - 2² = 2543027 is a prime.

It is a super-2 number, since 2×2543031² = 12934013333922, which contains 22 as substring.

It is a Duffinian number.

2543031 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2542995 and 2543013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141271 + ... + 141288.

2^2543031 is an apocalyptic number.

2543031 is a deficient number, since it is larger than the sum of its proper divisors (1130249).

2543031 is a wasteful number, since it uses less digits than its factorization.

2543031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282565 (or 282562 counting only the distinct ones).

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

The square root of 2543031 is about 1594.6883708110. The cubic root of 2543031 is about 136.4951493667.

Adding to 2543031 its reverse (1303452), we get a palindrome (3846483).

The spelling of 2543031 in words is "two million, five hundred forty-three thousand, thirty-one".