30921301292 has 144 divisors (see below), whose sum is σ = 70626608640. Its totient is φ = 11541404160.

The previous prime is 30921301289. The next prime is 30921301337. The reversal of 30921301292 is 29210312903.

It is a super-2 number, since 2×30921301292² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10519559 + ... + 10522497.

It is an arithmetic number, because the mean of its divisors is an integer number (490462560).

Almost surely, 2^30921301292 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 30921301292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35313304320).

30921301292 is an abundant number, since it is smaller than the sum of its proper divisors (39705307348).

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

30921301292 is a wasteful number, since it uses less digits than its factorization.

30921301292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052 (or 3019 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 30921301292 in words is "thirty billion, nine hundred twenty-one million, three hundred one thousand, two hundred ninety-two".