31031003112 has 32 divisors (see below), whose sum is σ = 77582016000. Its totient is φ = 10343066624.

The previous prime is 31031003099. The next prime is 31031003137. The reversal of 31031003112 is 21130013013.

It is a junction number, because it is equal to n+sod(n) for n = 31031003091 and 31031003100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616264 + ... + 664712.

It is an arithmetic number, because the mean of its divisors is an integer number (2424438000).

Almost surely, 2^31031003112 is an apocalyptic number.

It is an amenable number.

31031003112 is an abundant number, since it is smaller than the sum of its proper divisors (46551012888).

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

31031003112 is a wasteful number, since it uses less digits than its factorization.

31031003112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75145 (or 75141 counting only the distinct ones).

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

Adding to 31031003112 its reverse (21130013013), we get a palindrome (52161016125).

Subtracting from 31031003112 its reverse (21130013013), we obtain a palindrome (9900990099).

The spelling of 31031003112 in words is "thirty-one billion, thirty-one million, three thousand, one hundred twelve".