30233549721 has 16 divisors (see below), whose sum is σ = 42545043200. Its totient is φ = 19044477648.

The previous prime is 30233549711. The next prime is 30233549807. The reversal of 30233549721 is 12794533203.

It is not a de Polignac number, because 30233549721 - 2¹³ = 30233541529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30233549721.

It is not an unprimeable number, because it can be changed into a prime (30233549711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 678151 + ... + 721356.

It is an arithmetic number, because the mean of its divisors is an integer number (2659065200).

Almost surely, 2^30233549721 is an apocalyptic number.

It is an amenable number.

30233549721 is a deficient number, since it is larger than the sum of its proper divisors (12311493479).

30233549721 is a wasteful number, since it uses less digits than its factorization.

30233549721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399908.

The product of its (nonzero) digits is 136080, while the sum is 39.

The spelling of 30233549721 in words is "thirty billion, two hundred thirty-three million, five hundred forty-nine thousand, seven hundred twenty-one".