31011300112 has 80 divisors (see below), whose sum is σ = 66163265280. Its totient is φ = 13991371776.

The previous prime is 31011300107. The next prime is 31011300143. The reversal of 31011300112 is 21100311013.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 31011300092 and 31011300101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11661439 + ... + 11664097.

It is an arithmetic number, because the mean of its divisors is an integer number (827040816).

Almost surely, 2^31011300112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31011300112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33081632640).

31011300112 is an abundant number, since it is smaller than the sum of its proper divisors (35151965168).

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

31011300112 is a wasteful number, since it uses less digits than its factorization.

31011300112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920 (or 3914 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31011300112 its reverse (21100311013), we get a palindrome (52111611125).

The spelling of 31011300112 in words is "thirty-one billion, eleven million, three hundred thousand, one hundred twelve".