305031404 has 24 divisors (see below), whose sum is σ = 552452208. Its totient is φ = 147251520.

The previous prime is 305031383. The next prime is 305031421. The reversal of 305031404 is 404130503.

It is a super-2 number, since 2×305031404² = 186088314852422432, which contains 22 as substring.

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, 11522 + ... + 27254.

It is an arithmetic number, because the mean of its divisors is an integer number (23018842).

Almost surely, 2^305031404 is an apocalyptic number.

It is an amenable number.

305031404 is a deficient number, since it is larger than the sum of its proper divisors (247420804).

305031404 is a wasteful number, since it uses less digits than its factorization.

305031404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15905 (or 15903 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 305031404 is about 17465.1482673352. The cubic root of 305031404 is about 673.1546516912.

Adding to 305031404 its reverse (404130503), we get a palindrome (709161907).

Subtracting 305031404 from its reverse (404130503), we obtain a palindrome (99099099).

The spelling of 305031404 in words is "three hundred five million, thirty-one thousand, four hundred four".