31112201106 has 24 divisors (see below), whose sum is σ = 77039736384. Its totient is φ = 8889200280.

The previous prime is 31112201101. The next prime is 31112201119. The reversal of 31112201106 is 60110221113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31112201101) 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 11 ways as a sum of consecutive naturals, for example, 123460990 + ... + 123461241.

It is an arithmetic number, because the mean of its divisors is an integer number (3209989016).

Almost surely, 2^31112201106 is an apocalyptic number.

31112201106 is an abundant number, since it is smaller than the sum of its proper divisors (45927535278).

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

31112201106 is a wasteful number, since it uses less digits than its factorization.

31112201106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246922246 (or 246922243 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 31112201106 its reverse (60110221113), we get a palindrome (91222422219).

The spelling of 31112201106 in words is "thirty-one billion, one hundred twelve million, two hundred one thousand, one hundred six".