31032001212 has 72 divisors (see below), whose sum is σ = 80145865296. Its totient is φ = 9312213504.

The previous prime is 31032001129. The next prime is 31032001213. The reversal of 31032001212 is 21210023013.

It is a junction number, because it is equal to n+sod(n) for n = 31032001191 and 31032001200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032001213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35863 + ... + 251694.

It is an arithmetic number, because the mean of its divisors is an integer number (1113137018).

Almost surely, 2^31032001212 is an apocalyptic number.

It is an amenable number.

31032001212 is an abundant number, since it is smaller than the sum of its proper divisors (49113864084).

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

31032001212 is a wasteful number, since it uses less digits than its factorization.

31032001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287627 (or 287602 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31032001212 its reverse (21210023013), we get a palindrome (52242024225).

The spelling of 31032001212 in words is "thirty-one billion, thirty-two million, one thousand, two hundred twelve".