102001031321 has 4 divisors (see below), whose sum is σ = 116572607232. Its totient is φ = 87429455412.

The previous prime is 102001031311. The next prime is 102001031383. The reversal of 102001031321 is 123130100201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102001031321 - 2³⁴ = 84821162137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102001031296 and 102001031305.

It is not an unprimeable number, because it can be changed into a prime (102001031311) 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, 7285787945 + ... + 7285787958.

It is an arithmetic number, because the mean of its divisors is an integer number (29143151808).

Almost surely, 2^102001031321 is an apocalyptic number.

It is an amenable number.

102001031321 is a deficient number, since it is larger than the sum of its proper divisors (14571575911).

102001031321 is an equidigital number, since it uses as much as digits as its factorization.

102001031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14571575910.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 102001031321 its reverse (123130100201), we get a palindrome (225131131522).

The spelling of 102001031321 in words is "one hundred two billion, one million, thirty-one thousand, three hundred twenty-one".