100003131321 has 16 divisors (see below), whose sum is σ = 138479904000. Its totient is φ = 64138048128.

The previous prime is 100003131317. The next prime is 100003131341. The reversal of 100003131321 is 123131300001.

It is not a de Polignac number, because 100003131321 - 2² = 100003131317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100003131321.

It is not an unprimeable number, because it can be changed into a prime (100003131301) 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, 5051521 + ... + 5071278.

It is an arithmetic number, because the mean of its divisors is an integer number (8654994000).

Almost surely, 2^100003131321 is an apocalyptic number.

It is an amenable number.

100003131321 is a deficient number, since it is larger than the sum of its proper divisors (38476772679).

100003131321 is a wasteful number, since it uses less digits than its factorization.

100003131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10122928.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 100003131321 its reverse (123131300001), we get a palindrome (223134431322).

The spelling of 100003131321 in words is "one hundred billion, three million, one hundred thirty-one thousand, three hundred twenty-one".