31130330123311 has 72 divisors (see below), whose sum is σ = 34337965533872. Its totient is φ = 28198892620800.

The previous prime is 31130330123287. The next prime is 31130330123341. The reversal of 31130330123311 is 11332103303113.

It is not a de Polignac number, because 31130330123311 - 2¹⁷ = 31130329992239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130330123341) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 18787162795 + ... + 18787164451.

Almost surely, 2^{31130330123311} is an apocalyptic number.

31130330123311 is a deficient number, since it is larger than the sum of its proper divisors (3207635410561).

31130330123311 is a wasteful number, since it uses less digits than its factorization.

31130330123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393 (or 2329 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 31130330123311 its reverse (11332103303113), we get a palindrome (42462433426424).

The spelling of 31130330123311 in words is "thirty-one trillion, one hundred thirty billion, three hundred thirty million, one hundred twenty-three thousand, three hundred eleven".