31023220030100 has 72 divisors (see below), whose sum is σ = 67414310208000. Its totient is φ = 12391985372800.

The previous prime is 31023220030087. The next prime is 31023220030111. The reversal of 31023220030100 is 103002232013.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 247274186 + ... + 247399614.

It is an arithmetic number, because the mean of its divisors is an integer number (936309864000).

Almost surely, 2^{31023220030100} is an apocalyptic number.

It is an amenable number.

31023220030100 is an abundant number, since it is smaller than the sum of its proper divisors (36391090177900).

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

31023220030100 is a wasteful number, since it uses less digits than its factorization.

31023220030100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128873 (or 128866 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31023220030100 its reverse (103002232013), we get a palindrome (31126222262113).

The spelling of 31023220030100 in words is "thirty-one trillion, twenty-three billion, two hundred twenty million, thirty thousand, one hundred".