31322131112 has 16 divisors (see below), whose sum is σ = 58830787860. Its totient is φ = 15633921024.

The previous prime is 31322131111. The next prime is 31322131121. The reversal of 31322131112 is 21113122313.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24965896036 + 6356235076 = 158006^2 + 79726^2 .

It is not an unprimeable number, because it can be changed into a prime (31322131111) 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, 3388163 + ... + 3397394.

Almost surely, 2^31322131112 is an apocalyptic number.

It is an amenable number.

31322131112 is a deficient number, since it is larger than the sum of its proper divisors (27508656748).

31322131112 is a wasteful number, since it uses less digits than its factorization.

31322131112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6786140 (or 6786136 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 31322131112 its reverse (21113122313), we get a palindrome (52435253425).

The spelling of 31322131112 in words is "thirty-one billion, three hundred twenty-two million, one hundred thirty-one thousand, one hundred twelve".