305211234 has 16 divisors (see below), whose sum is σ = 646329888. Its totient is φ = 95752512.

The previous prime is 305211223. The next prime is 305211281. The reversal of 305211234 is 432112503.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 305211234.

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, 1496032 + ... + 1496235.

It is an arithmetic number, because the mean of its divisors is an integer number (40395618).

Almost surely, 2^305211234 is an apocalyptic number.

305211234 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

305211234 is an abundant number, since it is smaller than the sum of its proper divisors (341118654).

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

305211234 is a wasteful number, since it uses less digits than its factorization.

305211234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992289.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 305211234 is about 17470.2957616636. The cubic root of 305211234 is about 673.2869108820.

Adding to 305211234 its reverse (432112503), we get a palindrome (737323737).

The spelling of 305211234 in words is "three hundred five million, two hundred eleven thousand, two hundred thirty-four".