2003536531 has 2 divisors, whose sum is σ = 2003536532. Its totient is φ = 2003536530.

The previous prime is 2003536523. The next prime is 2003536537. The reversal of 2003536531 is 1356353002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2003536531 - 2³ = 2003536523 is a prime.

It is a super-2 number, since 2×2003536531² = 8028317262103027922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2003536531.

It is not a weakly prime, because it can be changed into another prime (2003536537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001768265 + 1001768266.

It is an arithmetic number, because the mean of its divisors is an integer number (1001768266).

Almost surely, 2^2003536531 is an apocalyptic number.

2003536531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003536531 is an equidigital number, since it uses as much as digits as its factorization.

2003536531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 2003536531 is about 44760.8817048994. The cubic root of 2003536531 is about 1260.6632375801.

Adding to 2003536531 its reverse (1356353002), we get a palindrome (3359889533).

The spelling of 2003536531 in words is "two billion, three million, five hundred thirty-six thousand, five hundred thirty-one".