30311320012100 has 72 divisors (see below), whose sum is σ = 67418168294400. Its totient is φ = 11822080262400.

The previous prime is 30311320012081. The next prime is 30311320012117. The reversal of 30311320012100 is 121002311303.

It is a super-2 number, since 2×30311320012100² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5110421 + ... + 9313379.

Almost surely, 2^{30311320012100} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30311320012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33709084147200).

30311320012100 is an abundant number, since it is smaller than the sum of its proper divisors (37106848282300).

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

30311320012100 is a wasteful number, since it uses less digits than its factorization.

30311320012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204773 (or 4204766 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30311320012100 its reverse (121002311303), we get a palindrome (30432322323403).

The spelling of 30311320012100 in words is "thirty trillion, three hundred eleven billion, three hundred twenty million, twelve thousand, one hundred".