231028242 has 16 divisors (see below), whose sum is σ = 462208032. Its totient is φ = 76984160.

The previous prime is 231028211. The next prime is 231028271. The reversal of 231028242 is 242820132.

It is a super-2 number, since 2×231028242² = 106748097203221128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27142 + ... + 34622.

It is an arithmetic number, because the mean of its divisors is an integer number (28888002).

Almost surely, 2^231028242 is an apocalyptic number.

231028242 is an abundant number, since it is smaller than the sum of its proper divisors (231179790).

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

231028242 is a wasteful number, since it uses less digits than its factorization.

231028242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12633.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 231028242 is about 15199.6132187632. The cubic root of 231028242 is about 613.6042482935.

Adding to 231028242 its reverse (242820132), we get a palindrome (473848374).

The spelling of 231028242 in words is "two hundred thirty-one million, twenty-eight thousand, two hundred forty-two".