31321212211202 has 32 divisors (see below), whose sum is σ = 47216973081600. Its totient is φ = 15582334575808.

The previous prime is 31321212211139. The next prime is 31321212211301. The reversal of 31321212211202 is 20211221212313.

It is an unprimeable number.

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, 5388129248 + ... + 5388135060.

It is an arithmetic number, because the mean of its divisors is an integer number (1475530408800).

Almost surely, 2^{31321212211202} is an apocalyptic number.

31321212211202 is a deficient number, since it is larger than the sum of its proper divisors (15895760870398).

31321212211202 is a wasteful number, since it uses less digits than its factorization.

31321212211202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13330.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 31321212211202 its reverse (20211221212313), we get a palindrome (51532433423515).

The spelling of 31321212211202 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twelve million, two hundred eleven thousand, two hundred two".