31124442212 has 12 divisors (see below), whose sum is σ = 56345973180. Its totient is φ = 15025592736.

The previous prime is 31124442211. The next prime is 31124442227. The reversal of 31124442212 is 21224442113.

It can be written as a sum of positive squares in 2 ways, for example, as 9979210816 + 21145231396 = 99896^2 + 145414^2 .

It is not an unprimeable number, because it can be changed into a prime (31124442211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134156963 + ... + 134157194.

It is an arithmetic number, because the mean of its divisors is an integer number (4695497765).

Almost surely, 2^31124442212 is an apocalyptic number.

It is an amenable number.

31124442212 is a deficient number, since it is larger than the sum of its proper divisors (25221530968).

31124442212 is a wasteful number, since it uses less digits than its factorization.

31124442212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268314190 (or 268314188 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 31124442212 its reverse (21224442113), we get a palindrome (52348884325).

Subtracting from 31124442212 its reverse (21224442113), we obtain a palindrome (9900000099).

The spelling of 31124442212 in words is "thirty-one billion, one hundred twenty-four million, four hundred forty-two thousand, two hundred twelve".