231332503 has 2 divisors, whose sum is σ = 231332504. Its totient is φ = 231332502.

The previous prime is 231332477. The next prime is 231332513. The reversal of 231332503 is 305233132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231332503 - 2¹³ = 231324311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231332513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115666251 + 115666252.

It is an arithmetic number, because the mean of its divisors is an integer number (115666252).

Almost surely, 2^231332503 is an apocalyptic number.

231332503 is a deficient number, since it is larger than the sum of its proper divisors (1).

231332503 is an equidigital number, since it uses as much as digits as its factorization.

231332503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 231332503 is about 15209.6187657679. The cubic root of 231332503 is about 613.8734995647.

Adding to 231332503 its reverse (305233132), we get a palindrome (536565635).

The spelling of 231332503 in words is "two hundred thirty-one million, three hundred thirty-two thousand, five hundred three".