231033224 has 8 divisors (see below), whose sum is σ = 433187310. Its totient is φ = 115516608.

The previous prime is 231033197. The next prime is 231033233. The reversal of 231033224 is 422330132.

It can be written as a sum of positive squares in only one way, i.e., 227104900 + 3928324 = 15070^2 + 1982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 231033196 and 231033205.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14439569 + ... + 14439584.

Almost surely, 2^231033224 is an apocalyptic number.

It is an amenable number.

231033224 is a deficient number, since it is larger than the sum of its proper divisors (202154086).

231033224 is a wasteful number, since it uses less digits than its factorization.

231033224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28879159 (or 28879155 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 231033224 is about 15199.7771036289. Note that the first 3 decimals coincide. The cubic root of 231033224 is about 613.6086589439.

Adding to 231033224 its reverse (422330132), we get a palindrome (653363356).

The spelling of 231033224 in words is "two hundred thirty-one million, thirty-three thousand, two hundred twenty-four".