102313220 has 12 divisors (see below), whose sum is σ = 214857804. Its totient is φ = 40925280.

The previous prime is 102313217. The next prime is 102313229. The reversal of 102313220 is 22313201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14853316 + 87459904 = 3854^2 + 9352^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102313195 and 102313204.

It is not an unprimeable number, because it can be changed into a prime (102313229) 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, 2557811 + ... + 2557850.

It is an arithmetic number, because the mean of its divisors is an integer number (17904817).

Almost surely, 2^102313220 is an apocalyptic number.

102313220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102313220 is an abundant number, since it is smaller than the sum of its proper divisors (112544584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102313220 is a wasteful number, since it uses less digits than its factorization.

102313220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115670 (or 5115668 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 102313220 is about 10114.9997528423. Note that the first 3 decimals coincide. The cubic root of 102313220 is about 467.7106412531.

Adding to 102313220 its reverse (22313201), we get a palindrome (124626421).

The spelling of 102313220 in words is "one hundred two million, three hundred thirteen thousand, two hundred twenty".