30531021023136 has 192 divisors, whose sum is σ = 84027418675200. Its totient is φ = 9694120697856.

The previous prime is 30531021023123. The next prime is 30531021023171. The reversal of 30531021023136 is 63132012013503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70489345 + ... + 70921151.

It is an arithmetic number, because the mean of its divisors is an integer number (437642805600).

Almost surely, 2^{30531021023136} 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 30531021023136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42013709337600).

30531021023136 is an abundant number, since it is smaller than the sum of its proper divisors (53496397652064).

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

30531021023136 is a wasteful number, since it uses less digits than its factorization.

30531021023136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432191 (or 432183 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 30531021023136 its reverse (63132012013503), we get a palindrome (93663033036639).

The spelling of 30531021023136 in words is "thirty trillion, five hundred thirty-one billion, twenty-one million, twenty-three thousand, one hundred thirty-six".