102231310331321 has 4 divisors (see below), whose sum is σ = 104994318718692. Its totient is φ = 99468301943952.

The previous prime is 102231310331251. The next prime is 102231310331363. The reversal of 102231310331321 is 123133013132201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59071521640000 + 43159788691321 = 7685800^2 + 6569611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102231310331321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102231310331621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381504193630 + ... + 1381504193703.

It is an arithmetic number, because the mean of its divisors is an integer number (26248579679673).

Almost surely, 2^{102231310331321} is an apocalyptic number.

It is an amenable number.

102231310331321 is a deficient number, since it is larger than the sum of its proper divisors (2763008387371).

102231310331321 is an equidigital number, since it uses as much as digits as its factorization.

102231310331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763008387370.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 102231310331321 its reverse (123133013132201), we get a palindrome (225364323463522).

The spelling of 102231310331321 in words is "one hundred two trillion, two hundred thirty-one billion, three hundred ten million, three hundred thirty-one thousand, three hundred twenty-one".