102131224 has 32 divisors (see below), whose sum is σ = 215197920. Its totient is φ = 45086976.

The previous prime is 102131219. The next prime is 102131231. The reversal of 102131224 is 422131201.

It is a junction number, because it is equal to n+sod(n) for n = 102131198 and 102131207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18957 + ... + 23740.

It is an arithmetic number, because the mean of its divisors is an integer number (6724935).

Almost surely, 2^102131224 is an apocalyptic number.

It is an amenable number.

102131224 is an abundant number, since it is smaller than the sum of its proper divisors (113066696).

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

102131224 is a wasteful number, since it uses less digits than its factorization.

102131224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42739 (or 42735 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 102131224 is about 10105.9994062933. Note that the first 3 decimals coincide. The cubic root of 102131224 is about 467.4331535296.

Adding to 102131224 its reverse (422131201), we get a palindrome (524262425).

The spelling of 102131224 in words is "one hundred two million, one hundred thirty-one thousand, two hundred twenty-four".