31030103112 has 32 divisors (see below), whose sum is σ = 78509904480. Its totient is φ = 10218748160.

The previous prime is 31030103107. The next prime is 31030103119. The reversal of 31030103112 is 21130103013.

It is a junction number, because it is equal to n+sod(n) for n = 31030103091 and 31030103100.

It is not an unprimeable number, because it can be changed into a prime (31030103119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7786689 + ... + 7790672.

It is an arithmetic number, because the mean of its divisors is an integer number (2453434515).

Almost surely, 2^31030103112 is an apocalyptic number.

It is an amenable number.

31030103112 is an abundant number, since it is smaller than the sum of its proper divisors (47479801368).

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

31030103112 is a wasteful number, since it uses less digits than its factorization.

31030103112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15577453 (or 15577449 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31030103112 its reverse (21130103013), we get a palindrome (52160206125).

Subtracting from 31030103112 its reverse (21130103013), we obtain a palindrome (9900000099).

The spelling of 31030103112 in words is "thirty-one billion, thirty million, one hundred three thousand, one hundred twelve".