31103013003100 has 72 divisors (see below), whose sum is σ = 69792768421376. Its totient is φ = 12018789720000.

The previous prime is 31103013003059. The next prime is 31103013003107. The reversal of 31103013003100 is 130031030113.

It is a super-2 number, since 2×31103013003100² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103013003107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7015566 + ... + 10555765.

Almost surely, 2^{31103013003100} is an apocalyptic number.

It is an amenable number.

31103013003100 is an abundant number, since it is smaller than the sum of its proper divisors (38689755418276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31103013003100 is a wasteful number, since it uses less digits than its factorization.

31103013003100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17571947 (or 17571940 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 31103013003100 its reverse (130031030113), we get a palindrome (31233044033213).

The spelling of 31103013003100 in words is "thirty-one trillion, one hundred three billion, thirteen million, three thousand, one hundred".