31112201124 has 36 divisors (see below), whose sum is σ = 79933994140. Its totient is φ = 10200720960.

The previous prime is 31112201119. The next prime is 31112201147. The reversal of 31112201124 is 42110221113.

It can be written as a sum of positive squares in 2 ways, for example, as 14648745024 + 16463456100 = 121032^2 + 128310^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 31112201097 and 31112201106.

It is an unprimeable number.

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, 7081639 + ... + 7086030.

Almost surely, 2^31112201124 is an apocalyptic number.

It is an amenable number.

31112201124 is an abundant number, since it is smaller than the sum of its proper divisors (48821793016).

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

31112201124 is a wasteful number, since it uses less digits than its factorization.

31112201124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14167740 (or 14167735 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 31112201124 its reverse (42110221113), we get a palindrome (73222422237).

The spelling of 31112201124 in words is "thirty-one billion, one hundred twelve million, two hundred one thousand, one hundred twenty-four".