100321320131 has 4 divisors (see below), whose sum is σ = 102455816352. Its totient is φ = 98186823912.

The previous prime is 100321320103. The next prime is 100321320133. The reversal of 100321320131 is 131023123001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100321320131 - 2¹⁸ = 100321057987 is a prime.

It is a super-2 number, since 2×100321320131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100321320133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067248040 + ... + 1067248133.

It is an arithmetic number, because the mean of its divisors is an integer number (25613954088).

Almost surely, 2^100321320131 is an apocalyptic number.

100321320131 is a deficient number, since it is larger than the sum of its proper divisors (2134496221).

100321320131 is an equidigital number, since it uses as much as digits as its factorization.

100321320131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134496220.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 100321320131 its reverse (131023123001), we get a palindrome (231344443132).

The spelling of 100321320131 in words is "one hundred billion, three hundred twenty-one million, three hundred twenty thousand, one hundred thirty-one".