31230212232 has 32 divisors (see below), whose sum is σ = 78833551680. Its totient is φ = 10309001280.

The previous prime is 31230212227. The next prime is 31230212249. The reversal of 31230212232 is 23221203213.

It is a happy number.

It is a super-4 number, since 4×31230212232⁴ (a number of 43 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31230212199 and 31230212208.

It is an unprimeable number.

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, 6314319 + ... + 6319262.

It is an arithmetic number, because the mean of its divisors is an integer number (2463548490).

Almost surely, 2^31230212232 is an apocalyptic number.

It is an amenable number.

31230212232 is an abundant number, since it is smaller than the sum of its proper divisors (47603339448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31230212232 is a wasteful number, since it uses less digits than its factorization.

31230212232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12633693 (or 12633689 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31230212232 its reverse (23221203213), we get a palindrome (54451415445).

The spelling of 31230212232 in words is "thirty-one billion, two hundred thirty million, two hundred twelve thousand, two hundred thirty-two".