30453391081 has 9 divisors (see below), whose sum is σ = 30754552773. Its totient is φ = 30155155200.

The previous prime is 30453391069. The next prime is 30453391091. The reversal of 30453391081 is 18019335403.

The square root of 30453391081 is 174509.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 19799022681 + 10654368400 = 140709^2 + 103220^2 .

It is not a de Polignac number, because 30453391081 - 2⁵ = 30453391049 is a prime.

It is a super-2 number, since 2×30453391081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30453391081.

It is not an unprimeable number, because it can be changed into a prime (30453391091) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19020681 + ... + 19022281.

Almost surely, 2^30453391081 is an apocalyptic number.

30453391081 is the 174509-th square number.

30453391081 is the 87255-th centered octagonal number.

It is an amenable number.

30453391081 is a deficient number, since it is larger than the sum of its proper divisors (301161692).

30453391081 is an frugal number, since it uses more digits than its factorization.

30453391081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 30453391081 in words is "thirty billion, four hundred fifty-three million, three hundred ninety-one thousand, eighty-one".