31321110310321 has 32 divisors (see below), whose sum is σ = 34485219820800. Its totient is φ = 28271404871424.

The previous prime is 31321110310319. The next prime is 31321110310349. The reversal of 31321110310321 is 12301301112313.

It is not a de Polignac number, because 31321110310321 - 2¹ = 31321110310319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31321110310292 and 31321110310301.

It is not an unprimeable number, because it can be changed into a prime (31321110370321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209258716 + ... + 209408338.

It is an arithmetic number, because the mean of its divisors is an integer number (1077663119400).

Almost surely, 2^{31321110310321} is an apocalyptic number.

It is an amenable number.

31321110310321 is a deficient number, since it is larger than the sum of its proper divisors (3164109510479).

31321110310321 is a wasteful number, since it uses less digits than its factorization.

31321110310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151465.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 31321110310321 its reverse (12301301112313), we get a palindrome (43622411422634).

The spelling of 31321110310321 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred ten million, three hundred ten thousand, three hundred twenty-one".