304042031 has 4 divisors (see below), whose sum is σ = 307705272. Its totient is φ = 300378792.

The previous prime is 304042027. The next prime is 304042033. The reversal of 304042031 is 130240403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130240403 = 11057 ⋅11779.

It is a cyclic number.

It is not a de Polignac number, because 304042031 - 2² = 304042027 is a prime.

It is a super-2 number, since 2×304042031² = 184883113229209922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304042033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1831496 + ... + 1831661.

It is an arithmetic number, because the mean of its divisors is an integer number (76926318).

Almost surely, 2^304042031 is an apocalyptic number.

304042031 is a deficient number, since it is larger than the sum of its proper divisors (3663241).

304042031 is an equidigital number, since it uses as much as digits as its factorization.

304042031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663240.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 304042031 is about 17436.8010540925. The cubic root of 304042031 is about 672.4260683502.

Adding to 304042031 its reverse (130240403), we get a palindrome (434282434).

The spelling of 304042031 in words is "three hundred four million, forty-two thousand, thirty-one".