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30401060881 = 113215432
BaseRepresentation
bin11100010100000010…
…110110000000010001
32220110200221220110211
4130110002312000101
5444230132422011
621544400124121
72124236516362
oct342402660021
986420856424
1030401060881
1111990674004
125a85306641
132b364b8529
141685807b69
15bcde4bb21
hex7140b6011

30401060881 has 9 divisors (see below), whose sum is σ = 30692369019. Its totient is φ = 30112496736.

The previous prime is 30401060861. The next prime is 30401060933. The reversal of 30401060881 is 18806010403.

The square root of 30401060881 is 174359.

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., 535691025 + 29865369856 = 23145^2 + 172816^2 .

It is not a de Polignac number, because 30401060881 - 29 = 30401060369 is a prime.

It is a super-3 number, since 3×304010608813 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30401060801) 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, 19701796 + ... + 19703338.

Almost surely, 230401060881 is an apocalyptic number.

30401060881 is the 174359-th square number.

30401060881 is the 87180-th centered octagonal number.

It is an amenable number.

30401060881 is a deficient number, since it is larger than the sum of its proper divisors (291308138).

30401060881 is an frugal number, since it uses more digits than its factorization.

30401060881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 30401060881 in words is "thirty billion, four hundred one million, sixty thousand, eight hundred eighty-one".

Divisors: 1 113 1543 12769 174359 2380849 19702567 269035937 30401060881