305031342 has 32 divisors (see below), whose sum is σ = 760598784. Its totient is φ = 79228800.

The previous prime is 305031283. The next prime is 305031343. The reversal of 305031342 is 243130503.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305031343) 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, 329659 + ... + 330582.

It is an arithmetic number, because the mean of its divisors is an integer number (23768712).

Almost surely, 2^305031342 is an apocalyptic number.

305031342 is an abundant number, since it is smaller than the sum of its proper divisors (455567442).

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

305031342 is a wasteful number, since it uses less digits than its factorization.

305031342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660264.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 305031342 is about 17465.1464923716. The cubic root of 305031342 is about 673.1546060833.

Adding to 305031342 its reverse (243130503), we get a palindrome (548161845).

The spelling of 305031342 in words is "three hundred five million, thirty-one thousand, three hundred forty-two".