31321332103211 has 4 divisors (see below), whose sum is σ = 31321570875000. Its totient is φ = 31321093331424.

The previous prime is 31321332103207. The next prime is 31321332103253. The reversal of 31321332103211 is 11230123312313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31321332103211 - 2² = 31321332103207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31321332103261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119189021 + ... + 119451518.

It is an arithmetic number, because the mean of its divisors is an integer number (7830392718750).

Almost surely, 2^{31321332103211} is an apocalyptic number.

31321332103211 is a deficient number, since it is larger than the sum of its proper divisors (238771789).

31321332103211 is a wasteful number, since it uses less digits than its factorization.

31321332103211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238771788.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31321332103211 its reverse (11230123312313), we get a palindrome (42551455415524).

The spelling of 31321332103211 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred thirty-two million, one hundred three thousand, two hundred eleven".