31212233133 has 16 divisors (see below), whose sum is σ = 42488280576. Its totient is φ = 20375231040.

The previous prime is 31212233131. The next prime is 31212233201. The reversal of 31212233133 is 33133221213.

It is not a de Polignac number, because 31212233133 - 2¹ = 31212233131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212233131) 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 15 ways as a sum of consecutive naturals, for example, 341610 + ... + 423227.

It is an arithmetic number, because the mean of its divisors is an integer number (2655517536).

Almost surely, 2^31212233133 is an apocalyptic number.

It is an amenable number.

31212233133 is a deficient number, since it is larger than the sum of its proper divisors (11276047443).

31212233133 is a wasteful number, since it uses less digits than its factorization.

31212233133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765124.

The product of its digits is 1944, while the sum is 24.

Adding to 31212233133 its reverse (33133221213), we get a palindrome (64345454346).

The spelling of 31212233133 in words is "thirty-one billion, two hundred twelve million, two hundred thirty-three thousand, one hundred thirty-three".