243141432403 has 4 divisors (see below), whose sum is σ = 250984704448. Its totient is φ = 235298160360.

The previous prime is 243141432389. The next prime is 243141432409. The reversal of 243141432403 is 304234141342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243141432403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 7843272013 = 243141432403 / (2 + 4 + 3 + 1 + 4 + 1 + 4 + 3 + 2 + 4 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243141432409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3921635976 + ... + 3921636037.

It is an arithmetic number, because the mean of its divisors is an integer number (62746176112).

Almost surely, 2^243141432403 is an apocalyptic number.

243141432403 is a deficient number, since it is larger than the sum of its proper divisors (7843272045).

243141432403 is an equidigital number, since it uses as much as digits as its factorization.

243141432403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7843272044.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 243141432403 its reverse (304234141342), we get a palindrome (547375573745).

The spelling of 243141432403 in words is "two hundred forty-three billion, one hundred forty-one million, four hundred thirty-two thousand, four hundred three".