231545432344244 has 12 divisors (see below), whose sum is σ = 405398663064864. Its totient is φ = 115717242897144.

The previous prime is 231545432344243. The next prime is 231545432344253. The reversal of 231545432344244 is 442443234545132.

It is a super-2 number, since 2×231545432344244² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231545432344192 and 231545432344201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231545432344243) 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, 13868309354 + ... + 13868326049.

It is an arithmetic number, because the mean of its divisors is an integer number (33783221922072).

Almost surely, 2^{231545432344244} is an apocalyptic number.

It is an amenable number.

231545432344244 is a deficient number, since it is larger than the sum of its proper divisors (173853230720620).

231545432344244 is a wasteful number, since it uses less digits than its factorization.

231545432344244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27736637494 (or 27736637492 counting only the distinct ones).

The product of its digits is 22118400, while the sum is 50.

Adding to 231545432344244 its reverse (442443234545132), we get a palindrome (673988666889376).

The spelling of 231545432344244 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty-two million, three hundred forty-four thousand, two hundred forty-four".