102031220 has 24 divisors (see below), whose sum is σ = 223582464. Its totient is φ = 39037856.

The previous prime is 102031213. The next prime is 102031231. The reversal of 102031220 is 22130201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110444 + ... + 111363.

It is an arithmetic number, because the mean of its divisors is an integer number (9315936).

Almost surely, 2^102031220 is an apocalyptic number.

102031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102031220 is an abundant number, since it is smaller than the sum of its proper divisors (121551244).

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

102031220 is a wasteful number, since it uses less digits than its factorization.

102031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221839 (or 221837 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 102031220 is about 10101.0504404245. The cubic root of 102031220 is about 467.2805379410.

Adding to 102031220 its reverse (22130201), we get a palindrome (124161421).

The spelling of 102031220 in words is "one hundred two million, thirty-one thousand, two hundred twenty".