102130308 has 120 divisors (see below), whose sum is σ = 311696000. Its totient is φ = 29148336.

The previous prime is 102130307. The next prime is 102130309. The reversal of 102130308 is 803031201.

It is an interprime number because it is at equal distance from previous prime (102130307) and next prime (102130309).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (102130307) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 110673 + ... + 111591.

Almost surely, 2^102130308 is an apocalyptic number.

102130308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102130308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155848000).

102130308 is an abundant number, since it is smaller than the sum of its proper divisors (209565692).

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

102130308 is an equidigital number, since it uses as much as digits as its factorization.

102130308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 102130308 is about 10105.9540865769. The cubic root of 102130308 is about 467.4317560789.

Adding to 102130308 its reverse (803031201), we get a palindrome (905161509).

It can be divided in two parts, 1021 and 30308, that added together give a square (31329 = 177²).

The spelling of 102130308 in words is "one hundred two million, one hundred thirty thousand, three hundred eight".