102321623 has 4 divisors (see below), whose sum is σ = 108340560. Its totient is φ = 96302688.

The previous prime is 102321619. The next prime is 102321629. The reversal of 102321623 is 326123201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326123201 = 19 ⋅17164379.

It is not a de Polignac number, because 102321623 - 2² = 102321619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102321595 and 102321604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102321629) 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, 3009443 + ... + 3009476.

It is an arithmetic number, because the mean of its divisors is an integer number (27085140).

Almost surely, 2^102321623 is an apocalyptic number.

102321623 is a deficient number, since it is larger than the sum of its proper divisors (6018937).

102321623 is an equidigital number, since it uses as much as digits as its factorization.

102321623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6018936.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 102321623 is about 10115.4151175323. The cubic root of 102321623 is about 467.7234452841.

Adding to 102321623 its reverse (326123201), we get a palindrome (428444824).

The spelling of 102321623 in words is "one hundred two million, three hundred twenty-one thousand, six hundred twenty-three".