231312402224 has 10 divisors (see below), whose sum is σ = 448167779340. Its totient is φ = 115656201104.

The previous prime is 231312402133. The next prime is 231312402227. The reversal of 231312402224 is 422204213132.

It is a junction number, because it is equal to n+sod(n) for n = 231312402193 and 231312402202.

It is not an unprimeable number, because it can be changed into a prime (231312402227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7228512554 + ... + 7228512585.

It is an arithmetic number, because the mean of its divisors is an integer number (44816777934).

Almost surely, 2^231312402224 is an apocalyptic number.

It is an amenable number.

231312402224 is a deficient number, since it is larger than the sum of its proper divisors (216855377116).

231312402224 is a wasteful number, since it uses less digits than its factorization.

231312402224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14457025147 (or 14457025141 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 231312402224 its reverse (422204213132), we get a palindrome (653516615356).

The spelling of 231312402224 in words is "two hundred thirty-one billion, three hundred twelve million, four hundred two thousand, two hundred twenty-four".