102131033321 has 4 divisors (see below), whose sum is σ = 102136339200. Its totient is φ = 102125727444.

The previous prime is 102131033273. The next prime is 102131033351. The reversal of 102131033321 is 123330131201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123330131201 = 9649 ⋅12781649.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102131033321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102131033293 and 102131033302.

It is not an unprimeable number, because it can be changed into a prime (102131033351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2623961 + ... + 2662598.

It is an arithmetic number, because the mean of its divisors is an integer number (25534084800).

Almost surely, 2^102131033321 is an apocalyptic number.

It is an amenable number.

102131033321 is a deficient number, since it is larger than the sum of its proper divisors (5305879).

102131033321 is an equidigital number, since it uses as much as digits as its factorization.

102131033321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305878.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 102131033321 its reverse (123330131201), we get a palindrome (225461164522).

The spelling of 102131033321 in words is "one hundred two billion, one hundred thirty-one million, thirty-three thousand, three hundred twenty-one".