31103321332331 has 16 divisors (see below), whose sum is σ = 32707754069760. Its totient is φ = 29520619228320.

The previous prime is 31103321332319. The next prime is 31103321332337. The reversal of 31103321332331 is 13323312330113.

It is a de Polignac number, because none of the positive numbers 2^k-31103321332331 is a prime.

It is a super-3 number, since 3×31103321332331³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31103321332294 and 31103321332303.

It is not an unprimeable number, because it can be changed into a prime (31103321332337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6296045 + ... + 10091918.

It is an arithmetic number, because the mean of its divisors is an integer number (2044234629360).

Almost surely, 2^{31103321332331} is an apocalyptic number.

31103321332331 is a deficient number, since it is larger than the sum of its proper divisors (1604432737429).

31103321332331 is a wasteful number, since it uses less digits than its factorization.

31103321332331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16388626.

The product of its (nonzero) digits is 8748, while the sum is 29.

Adding to 31103321332331 its reverse (13323312330113), we get a palindrome (44426633662444).

The spelling of 31103321332331 in words is "thirty-one trillion, one hundred three billion, three hundred twenty-one million, three hundred thirty-two thousand, three hundred thirty-one".