30312313012 has 48 divisors (see below), whose sum is σ = 56518115472. Its totient is φ = 14175682560.

The previous prime is 30312312977. The next prime is 30312313037. The reversal of 30312313012 is 21031321303.

It can be written as a sum of positive squares in 8 ways, for example, as 14247764496 + 16064548516 = 119364^2 + 126746^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9710812 + ... + 9713932.

It is an arithmetic number, because the mean of its divisors is an integer number (1177460739).

Almost surely, 2^30312313012 is an apocalyptic number.

It is an amenable number.

30312313012 is a deficient number, since it is larger than the sum of its proper divisors (26205802460).

30312313012 is a wasteful number, since it uses less digits than its factorization.

30312313012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988 (or 3986 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30312313012 its reverse (21031321303), we get a palindrome (51343634315).

The spelling of 30312313012 in words is "thirty billion, three hundred twelve million, three hundred thirteen thousand, twelve".