102232321 has 3 divisors (see below), whose sum is σ = 102242433. Its totient is φ = 102222210.

The previous prime is 102232313. The next prime is 102232381. The reversal of 102232321 is 123232201.

The square root of 102232321 is 10111.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 102232321 - 2³ = 102232313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102232295 and 102232304.

It is not an unprimeable number, because it can be changed into a prime (102232381) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5056 + ... + 15166.

It is an arithmetic number, because the mean of its divisors is an integer number (34080811).

Almost surely, 2^102232321 is an apocalyptic number.

102232321 is the 10111-st square number.

102232321 is the 5056-th centered octagonal number.

It is an amenable number.

102232321 is a deficient number, since it is larger than the sum of its proper divisors (10112).

102232321 is an frugal number, since it uses more digits than its factorization.

102232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20222 (or 10111 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The cubic root of 102232321 is about 467.5873359096.

Multiplying 102232321 by its sum of digits (16), we get a square (1635717136 = 40444²).

Multiplying 102232321 by its product of nonzero digits (144), we get a square (14721454224 = 121332²).

Adding to 102232321 its reverse (123232201), we get a palindrome (225464522).

It can be divided in two parts, 10223 and 2321, that added together give a square (12544 = 112²).

The spelling of 102232321 in words is "one hundred two million, two hundred thirty-two thousand, three hundred twenty-one".