231242003444 has 6 divisors (see below), whose sum is σ = 404673506034. Its totient is φ = 115621001720.

The previous prime is 231242003407. The next prime is 231242003453. The reversal of 231242003444 is 444300242132.

It can be written as a sum of positive squares in only one way, i.e., 128136793444 + 103105210000 = 357962^2 + 321100^2 .

It is a super-2 number, since 2×231242003444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28905250427 + ... + 28905250434.

It is an arithmetic number, because the mean of its divisors is an integer number (67445584339).

Almost surely, 2^231242003444 is an apocalyptic number.

It is an amenable number.

231242003444 is a deficient number, since it is larger than the sum of its proper divisors (173431502590).

231242003444 is a wasteful number, since it uses less digits than its factorization.

231242003444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57810500865 (or 57810500863 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 231242003444 its reverse (444300242132), we get a palindrome (675542245576).

The spelling of 231242003444 in words is "two hundred thirty-one billion, two hundred forty-two million, three thousand, four hundred forty-four".