100303312321 has 16 divisors (see below), whose sum is σ = 105984145024. Its totient is φ = 94818708864.

The previous prime is 100303312259. The next prime is 100303312337. The reversal of 100303312321 is 123213303001.

It is a cyclic number.

It is not a de Polignac number, because 100303312321 - 2²¹ = 100301215169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100303312391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96165 + ... + 458098.

It is an arithmetic number, because the mean of its divisors is an integer number (6624009064).

Almost surely, 2^100303312321 is an apocalyptic number.

It is an amenable number.

100303312321 is a deficient number, since it is larger than the sum of its proper divisors (5680832703).

100303312321 is an equidigital number, since it uses as much as digits as its factorization.

100303312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554440.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 100303312321 its reverse (123213303001), we get a palindrome (223516615322).

The spelling of 100303312321 in words is "one hundred billion, three hundred three million, three hundred twelve thousand, three hundred twenty-one".