123431132003 has 2 divisors, whose sum is σ = 123431132004. Its totient is φ = 123431132002.

The previous prime is 123431131997. The next prime is 123431132089. The reversal of 123431132003 is 300231134321.

It is a weak prime.

It is an emirp because it is prime and its reverse (300231134321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123431132003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123431132003.

It is not a weakly prime, because it can be changed into another prime (123431632003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61715566001 + 61715566002.

It is an arithmetic number, because the mean of its divisors is an integer number (61715566002).

Almost surely, 2^123431132003 is an apocalyptic number.

123431132003 is a deficient number, since it is larger than the sum of its proper divisors (1).

123431132003 is an equidigital number, since it uses as much as digits as its factorization.

123431132003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 123431132003 its reverse (300231134321), we get a palindrome (423662266324).

The spelling of 123431132003 in words is "one hundred twenty-three billion, four hundred thirty-one million, one hundred thirty-two thousand, three".