231321320003 has 2 divisors, whose sum is σ = 231321320004. Its totient is φ = 231321320002.

The previous prime is 231321319987. The next prime is 231321320033. The reversal of 231321320003 is 300023123132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231321320003 - 2⁴ = 231321319987 is a prime.

It is not a weakly prime, because it can be changed into another prime (231321320033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115660660001 + 115660660002.

It is an arithmetic number, because the mean of its divisors is an integer number (115660660002).

Almost surely, 2^231321320003 is an apocalyptic number.

231321320003 is a deficient number, since it is larger than the sum of its proper divisors (1).

231321320003 is an equidigital number, since it uses as much as digits as its factorization.

231321320003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 231321320003 its reverse (300023123132), we get a palindrome (531344443135).

The spelling of 231321320003 in words is "two hundred thirty-one billion, three hundred twenty-one million, three hundred twenty thousand, three".