31134243112 has 64 divisors (see below), whose sum is σ = 69924280320. Its totient is φ = 12706761408.

The previous prime is 31134243109. The next prime is 31134243121. The reversal of 31134243112 is 21134243113.

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, 239133 + ... + 345619.

It is an arithmetic number, because the mean of its divisors is an integer number (1092566880).

Almost surely, 2^31134243112 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 31134243112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34962140160).

31134243112 is an abundant number, since it is smaller than the sum of its proper divisors (38790037208).

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

31134243112 is a wasteful number, since it uses less digits than its factorization.

31134243112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106750 (or 106746 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

Adding to 31134243112 its reverse (21134243113), we get a palindrome (52268486225).

Subtracting from 31134243112 its reverse (21134243113), we obtain a palindrome (9999999999).

The spelling of 31134243112 in words is "thirty-one billion, one hundred thirty-four million, two hundred forty-three thousand, one hundred twelve".