31100045232 has 40 divisors (see below), whose sum is σ = 80352079360. Its totient is φ = 10365353280.

The previous prime is 31100045213. The next prime is 31100045233. The reversal of 31100045232 is 23254000113.

It is a junction number, because it is equal to n+sod(n) for n = 31100045199 and 31100045208.

It is not an unprimeable number, because it can be changed into a prime (31100045233) 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 7 ways as a sum of consecutive naturals, for example, 381357 + ... + 455667.

It is an arithmetic number, because the mean of its divisors is an integer number (2008801984).

Almost surely, 2^31100045232 is an apocalyptic number.

It is an amenable number.

31100045232 is an abundant number, since it is smaller than the sum of its proper divisors (49252034128).

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

31100045232 is a wasteful number, since it uses less digits than its factorization.

31100045232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83041 (or 83035 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 31100045232 its reverse (23254000113), we get a palindrome (54354045345).

The spelling of 31100045232 in words is "thirty-one billion, one hundred million, forty-five thousand, two hundred thirty-two".