243132403 has 2 divisors, whose sum is σ = 243132404. Its totient is φ = 243132402.

The previous prime is 243132401. The next prime is 243132431. The reversal of 243132403 is 304231342.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243132403 - 2¹ = 243132401 is a prime.

It is a super-2 number, since 2×243132403² = 118226730777108818, which contains 22 as substring.

Together with 243132401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (243132401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121566201 + 121566202.

It is an arithmetic number, because the mean of its divisors is an integer number (121566202).

Almost surely, 2^243132403 is an apocalyptic number.

243132403 is a deficient number, since it is larger than the sum of its proper divisors (1).

243132403 is an equidigital number, since it uses as much as digits as its factorization.

243132403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 243132403 is about 15592.7035179920. The cubic root of 243132403 is about 624.1384635135.

Adding to 243132403 its reverse (304231342), we get a palindrome (547363745).

The spelling of 243132403 in words is "two hundred forty-three million, one hundred thirty-two thousand, four hundred three".