2818531 has 2 divisors, whose sum is σ = 2818532. Its totient is φ = 2818530.

The previous prime is 2818523. The next prime is 2818537. The reversal of 2818531 is 1358182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2818531 - 2³ = 2818523 is a prime.

It is a super-2 number, since 2×2818531² = 15888233995922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2818531.

It is not a weakly prime, because it can be changed into another prime (2818537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1409265 + 1409266.

It is an arithmetic number, because the mean of its divisors is an integer number (1409266).

2^2818531 is an apocalyptic number.

2818531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2818531 is an equidigital number, since it uses as much as digits as its factorization.

2818531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 28.

The square root of 2818531 is about 1678.8481170136. The cubic root of 2818531 is about 141.2562280910.

The spelling of 2818531 in words is "two million, eight hundred eighteen thousand, five hundred thirty-one".