102321323305 has 4 divisors (see below), whose sum is σ = 122785587972. Its totient is φ = 81857058640.

The previous prime is 102321323287. The next prime is 102321323311. The reversal of 102321323305 is 503323123201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503323123201 = 61 ⋅8251198741.

It can be written as a sum of positive squares in 2 ways, for example, as 13405239961 + 88916083344 = 115781^2 + 298188^2 .

It is not a de Polignac number, because 102321323305 - 2⁹ = 102321322793 is a prime.

It is a super-2 number, since 2×102321323305² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102321323305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10232132326 + ... + 10232132335.

It is an arithmetic number, because the mean of its divisors is an integer number (30696396993).

Almost surely, 2^102321323305 is an apocalyptic number.

It is an amenable number.

102321323305 is a deficient number, since it is larger than the sum of its proper divisors (20464264667).

102321323305 is an equidigital number, since it uses as much as digits as its factorization.

102321323305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20464264666.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 102321323305 its reverse (503323123201), we get a palindrome (605644446506).

The spelling of 102321323305 in words is "one hundred two billion, three hundred twenty-one million, three hundred twenty-three thousand, three hundred five".