305102130 has 32 divisors (see below), whose sum is σ = 764083584. Its totient is φ = 77822976.

The previous prime is 305102129. The next prime is 305102137. The reversal of 305102130 is 31201503.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (305102137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220399 + ... + 221778.

It is an arithmetic number, because the mean of its divisors is an integer number (23877612).

Almost surely, 2^305102130 is an apocalyptic number.

305102130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305102130 is an abundant number, since it is smaller than the sum of its proper divisors (458981454).

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

305102130 is a wasteful number, since it uses less digits than its factorization.

305102130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442210.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 305102130 is about 17467.1729252332. The cubic root of 305102130 is about 673.2066745935.

Adding to 305102130 its reverse (31201503), we get a palindrome (336303633).

It can be divided in two parts, 30510 and 2130, that added together give a triangular number (32640 = T₂₅₅).

The spelling of 305102130 in words is "three hundred five million, one hundred two thousand, one hundred thirty".