304142331 has 16 divisors (see below), whose sum is σ = 418670624. Its totient is φ = 196245504.

The previous prime is 304142303. The next prime is 304142353. The reversal of 304142331 is 133241403.

It is not a de Polignac number, because 304142331 - 2⁵ = 304142299 is a prime.

It is a super-2 number, since 2×304142331² = 185005115012227122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304142298 and 304142307.

It is not an unprimeable number, because it can be changed into a prime (304142431) 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, 14325 + ... + 28521.

It is an arithmetic number, because the mean of its divisors is an integer number (26166914).

Almost surely, 2^304142331 is an apocalyptic number.

304142331 is a deficient number, since it is larger than the sum of its proper divisors (114528293).

304142331 is a wasteful number, since it uses less digits than its factorization.

304142331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14430.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 304142331 is about 17439.6769178790. The cubic root of 304142331 is about 672.5000021190.

Adding to 304142331 its reverse (133241403), we get a palindrome (437383734).

The spelling of 304142331 in words is "three hundred four million, one hundred forty-two thousand, three hundred thirty-one".