30311320112012 has 12 divisors (see below), whose sum is σ = 53351427597216. Its totient is φ = 15068055084240.

The previous prime is 30311320112009. The next prime is 30311320112107. The reversal of 30311320112012 is 21021102311303.

It is a happy number.

It is a super-2 number, since 2×30311320112012² (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 3 ways as a sum of consecutive naturals, for example, 21901242164 + ... + 21901243547.

It is an arithmetic number, because the mean of its divisors is an integer number (4445952299768).

Almost surely, 2^{30311320112012} is an apocalyptic number.

It is an amenable number.

30311320112012 is a deficient number, since it is larger than the sum of its proper divisors (23040107485204).

30311320112012 is a wasteful number, since it uses less digits than its factorization.

30311320112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43802485888 (or 43802485886 counting only the distinct ones).

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

Adding to 30311320112012 its reverse (21021102311303), we get a palindrome (51332422423315).

The spelling of 30311320112012 in words is "thirty trillion, three hundred eleven billion, three hundred twenty million, one hundred twelve thousand, twelve".