31103312011331 has 48 divisors (see below), whose sum is σ = 38654741410560. Its totient is φ = 24880053925440.

The previous prime is 31103312011297. The next prime is 31103312011333. The reversal of 31103312011331 is 13311021330113.

It is not a de Polignac number, because 31103312011331 - 2¹⁴ = 31103311994947 is a prime.

It is a super-3 number, since 3×31103312011331³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 31103312011297 and 31103312011306.

It is not an unprimeable number, because it can be changed into a prime (31103312011333) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78263681 + ... + 78660093.

It is an arithmetic number, because the mean of its divisors is an integer number (805307112720).

Almost surely, 2^{31103312011331} is an apocalyptic number.

31103312011331 is a deficient number, since it is larger than the sum of its proper divisors (7551429399229).

31103312011331 is a wasteful number, since it uses less digits than its factorization.

31103312011331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397704 (or 397697 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31103312011331 its reverse (13311021330113), we get a palindrome (44414333341444).

The spelling of 31103312011331 in words is "thirty-one trillion, one hundred three billion, three hundred twelve million, eleven thousand, three hundred thirty-one".