30311211320 has 48 divisors (see below), whose sum is σ = 73849964760. Its totient is φ = 11191829376.

The previous prime is 30311211251. The next prime is 30311211323. The reversal of 30311211320 is 2311211303.

It is a super-2 number, since 2×30311211320² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311211323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2235194 + ... + 2248713.

Almost surely, 2^30311211320 is an apocalyptic number.

It is an amenable number.

30311211320 is an abundant number, since it is smaller than the sum of its proper divisors (43538753440).

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

30311211320 is a wasteful number, since it uses less digits than its factorization.

30311211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483944 (or 4483927 counting only the distinct ones).

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

Subtracting from 30311211320 its sum of digits (17), we obtain a palindrome (30311211303).

Adding to 30311211320 its reverse (2311211303), we get a palindrome (32622422623).

It can be divided in two parts, 303112 and 11320, that added together give a cube (314432 = 68³).

The spelling of 30311211320 in words is "thirty billion, three hundred eleven million, two hundred eleven thousand, three hundred twenty".