31211002032312 has 64 divisors (see below), whose sum is σ = 78970487016960. Its totient is φ = 10277945600000.

The previous prime is 31211002032227. The next prime is 31211002032313. The reversal of 31211002032312 is 21323020011213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31211002032313) 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 15 ways as a sum of consecutive naturals, for example, 56999512 + ... + 57544472.

It is an arithmetic number, because the mean of its divisors is an integer number (1233913859640).

Almost surely, 2^{31211002032312} is an apocalyptic number.

It is an amenable number.

31211002032312 is an abundant number, since it is smaller than the sum of its proper divisors (47759484984648).

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

31211002032312 is a wasteful number, since it uses less digits than its factorization.

31211002032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573804 (or 573800 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31211002032312 its reverse (21323020011213), we get a palindrome (52534022043525).

The spelling of 31211002032312 in words is "thirty-one trillion, two hundred eleven billion, two million, thirty-two thousand, three hundred twelve".