102343221 has 12 divisors (see below), whose sum is σ = 151824972. Its totient is φ = 66384576.

The previous prime is 102343217. The next prime is 102343223. The reversal of 102343221 is 122343201.

102343221 is a `hidden beast` number, since 102 + 343 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 79014321 + 23328900 = 8889^2 + 4830^2 .

It is not a de Polignac number, because 102343221 - 2² = 102343217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102343194 and 102343203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102343223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153336 + ... + 154001.

It is an arithmetic number, because the mean of its divisors is an integer number (12652081).

Almost surely, 2^102343221 is an apocalyptic number.

It is an amenable number.

102343221 is a deficient number, since it is larger than the sum of its proper divisors (49481751).

102343221 is a wasteful number, since it uses less digits than its factorization.

102343221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307380 (or 307377 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 102343221 is about 10116.4826397321. The cubic root of 102343221 is about 467.7563519171.

Adding to 102343221 its reverse (122343201), we get a palindrome (224686422).

It can be divided in two parts, 1023 and 43221, that added together give a palindrome (44244).

The spelling of 102343221 in words is "one hundred two million, three hundred forty-three thousand, two hundred twenty-one".