31212023224 has 32 divisors (see below), whose sum is σ = 61076384640. Its totient is φ = 14925196000.

The previous prime is 31212023221. The next prime is 31212023243. The reversal of 31212023224 is 42232021213.

It is a junction number, because it is equal to n+sod(n) for n = 31212023195 and 31212023204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212023221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2313699 + ... + 2327149.

It is an arithmetic number, because the mean of its divisors is an integer number (1908637020).

Almost surely, 2^31212023224 is an apocalyptic number.

It is an amenable number.

31212023224 is a deficient number, since it is larger than the sum of its proper divisors (29864361416).

31212023224 is a wasteful number, since it uses less digits than its factorization.

31212023224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26091 (or 26087 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31212023224 its reverse (42232021213), we get a palindrome (73444044437).

The spelling of 31212023224 in words is "thirty-one billion, two hundred twelve million, twenty-three thousand, two hundred twenty-four".