531113203 has 2 divisors, whose sum is σ = 531113204. Its totient is φ = 531113202.

The previous prime is 531113183. The next prime is 531113237. The reversal of 531113203 is 302311135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531113203 - 2²¹ = 529016051 is a prime.

It is not a weakly prime, because it can be changed into another prime (531113293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265556601 + 265556602.

It is an arithmetic number, because the mean of its divisors is an integer number (265556602).

Almost surely, 2^531113203 is an apocalyptic number.

531113203 is a deficient number, since it is larger than the sum of its proper divisors (1).

531113203 is an equidigital number, since it uses as much as digits as its factorization.

531113203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 531113203 is about 23045.8934085880. The cubic root of 531113203 is about 809.8334276182.

Adding to 531113203 its reverse (302311135), we get a palindrome (833424338).

The spelling of 531113203 in words is "five hundred thirty-one million, one hundred thirteen thousand, two hundred three".