31100203220030 has 96 divisors (see below), whose sum is σ = 65519553549312. Its totient is φ = 10411820136000.

The previous prime is 31100203219997. The next prime is 31100203220057. The reversal of 31100203220030 is 3002230200113.

It is a junction number, because it is equal to n+sod(n) for n = 31100203219990 and 31100203220008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66412205 + ... + 66878855.

It is an arithmetic number, because the mean of its divisors is an integer number (682495349472).

Almost surely, 2^{31100203220030} is an apocalyptic number.

31100203220030 is an abundant number, since it is smaller than the sum of its proper divisors (34419350329282).

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

31100203220030 is a wasteful number, since it uses less digits than its factorization.

31100203220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467190 (or 467143 counting only the distinct ones).

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

Adding to 31100203220030 its reverse (3002230200113), we get a palindrome (34102433420143).

The spelling of 31100203220030 in words is "thirty-one trillion, one hundred billion, two hundred three million, two hundred twenty thousand, thirty".