305230136 has 32 divisors (see below), whose sum is σ = 610934400. Its totient is φ = 142541280.

The previous prime is 305230111. The next prime is 305230139. The reversal of 305230136 is 631032503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305230139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3350 + ... + 24933.

It is an arithmetic number, because the mean of its divisors is an integer number (19091700).

Almost surely, 2^305230136 is an apocalyptic number.

It is an amenable number.

305230136 is an abundant number, since it is smaller than the sum of its proper divisors (305704264).

305230136 is a wasteful number, since it uses less digits than its factorization.

305230136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28379 (or 28375 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 305230136 is about 17470.8367286744. The cubic root of 305230136 is about 673.3008096785.

Adding to 305230136 its reverse (631032503), we get a palindrome (936262639).

The spelling of 305230136 in words is "three hundred five million, two hundred thirty thousand, one hundred thirty-six".