231321465603 has 10 divisors (see below), whose sum is σ = 345554288244. Its totient is φ = 154214310348.

The previous prime is 231321465593. The next prime is 231321465671. The reversal of 231321465603 is 306564123132.

231321465603 is a `hidden beast` number, since 2 + 3 + 1 + 3 + 2 + 1 + 46 + 5 + 603 = 666.

It is not a de Polignac number, because 231321465603 - 2¹² = 231321461507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231321465103) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1427910201 + ... + 1427910362.

Almost surely, 2^231321465603 is an apocalyptic number.

231321465603 is a deficient number, since it is larger than the sum of its proper divisors (114232822641).

231321465603 is an equidigital number, since it uses as much as digits as its factorization.

231321465603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855820575 (or 2855820566 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 231321465603 its reverse (306564123132), we get a palindrome (537885588735).

The spelling of 231321465603 in words is "two hundred thirty-one billion, three hundred twenty-one million, four hundred sixty-five thousand, six hundred three".