30031211320 has 256 divisors, whose sum is σ = 79702963200. Its totient is φ = 10072719360.

The previous prime is 30031211257. The next prime is 30031211351. The reversal of 30031211320 is 2311213003.

It is a super-2 number, since 2×30031211320² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30031211294 and 30031211303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52046872 + ... + 52047448.

It is an arithmetic number, because the mean of its divisors is an integer number (311339700).

Almost surely, 2^30031211320 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 30031211320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39851481600).

30031211320 is an abundant number, since it is smaller than the sum of its proper divisors (49671751880).

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

30031211320 is a wasteful number, since it uses less digits than its factorization.

30031211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30031211320 its reverse (2311213003), we get a palindrome (32342424323).

The spelling of 30031211320 in words is "thirty billion, thirty-one million, two hundred eleven thousand, three hundred twenty".