30255471481 has 15 divisors (see below), whose sum is σ = 31437669615. Its totient is φ = 29117723400.

The previous prime is 30255471479. The next prime is 30255471487. The reversal of 30255471481 is 18417455203.

The square root of 30255471481 is 173941.

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

It can be written as a sum of positive squares in only one way, i.e., 333391081 + 29922080400 = 18259^2 + 172980^2 .

It is not a de Polignac number, because 30255471481 - 2¹ = 30255471479 is a prime.

It is a super-2 number, since 2×30255471481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30255471487) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 167157211 + ... + 167157391.

It is an arithmetic number, because the mean of its divisors is an integer number (2095844641).

Almost surely, 2^30255471481 is an apocalyptic number.

30255471481 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30255471481 is the 173941-st square number.

30255471481 is the 86971-st centered octagonal number.

It is an amenable number.

30255471481 is a deficient number, since it is larger than the sum of its proper divisors (1182198134).

30255471481 is an frugal number, since it uses more digits than its factorization.

30255471481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 30255471481 in words is "thirty billion, two hundred fifty-five million, four hundred seventy-one thousand, four hundred eighty-one".