31133223230 has 32 divisors (see below), whose sum is σ = 57254943744. Its totient is φ = 12185945856.

The previous prime is 31133223217. The next prime is 31133223299. The reversal of 31133223230 is 3232233113.

It is a junction number, because it is equal to n+sod(n) for n = 31133223196 and 31133223205.

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 in 15 ways as a sum of consecutive naturals, for example, 75197 + ... + 260616.

It is an arithmetic number, because the mean of its divisors is an integer number (1789216992).

Almost surely, 2^31133223230 is an apocalyptic number.

31133223230 is a deficient number, since it is larger than the sum of its proper divisors (26121720514).

31133223230 is a wasteful number, since it uses less digits than its factorization.

31133223230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336020.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31133223230 its reverse (3232233113), we get a palindrome (34365456343).

The spelling of 31133223230 in words is "thirty-one billion, one hundred thirty-three million, two hundred twenty-three thousand, two hundred thirty".