31112110986 has 64 divisors (see below), whose sum is σ = 69627081600. Its totient is φ = 9187792640.

The previous prime is 31112110969. The next prime is 31112110987. The reversal of 31112110986 is 68901121113.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (31112110987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491356 + ... + 551048.

It is an arithmetic number, because the mean of its divisors is an integer number (1087923150).

Almost surely, 2^31112110986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31112110986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34813540800).

31112110986 is an abundant number, since it is smaller than the sum of its proper divisors (38514970614).

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

31112110986 is a wasteful number, since it uses less digits than its factorization.

31112110986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59911.

The product of its (nonzero) digits is 2592, while the sum is 33.

The spelling of 31112110986 in words is "thirty-one billion, one hundred twelve million, one hundred ten thousand, nine hundred eighty-six".