31003100112 has 20 divisors (see below), whose sum is σ = 80091342080. Its totient is φ = 10334366688.

The previous prime is 31003100111. The next prime is 31003100159. The reversal of 31003100112 is 21100130013.

It is a super-2 number, since 2×31003100112² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003100111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322948912 + ... + 322949007.

It is an arithmetic number, because the mean of its divisors is an integer number (4004567104).

Almost surely, 2^31003100112 is an apocalyptic number.

It is an amenable number.

31003100112 is an abundant number, since it is smaller than the sum of its proper divisors (49088241968).

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

31003100112 is a wasteful number, since it uses less digits than its factorization.

31003100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645897930 (or 645897924 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 31003100112 its reverse (21100130013), we get a palindrome (52103230125).

The spelling of 31003100112 in words is "thirty-one billion, three million, one hundred thousand, one hundred twelve".