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30553543213 = 149205057337
BaseRepresentation
bin11100011101001000…
…100001001000101101
32220212022212210220121
4130131020201020231
51000033201340323
622011444244541
72131100555314
oct343510411055
986768783817
1030553543213
1111a59751266
125b083a0751
132b5bc7626b
14169bb7b27b
15bdc51ba5d
hex71d22122d

30553543213 has 4 divisors (see below), whose sum is σ = 30758600700. Its totient is φ = 30348485728.

The previous prime is 30553543193. The next prime is 30553543217. The reversal of 30553543213 is 31234535503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31234535503 = 172223181361.

It can be written as a sum of positive squares in 2 ways, for example, as 8983627524 + 21569915689 = 94782^2 + 146867^2 .

It is a cyclic number.

It is not a de Polignac number, because 30553543213 - 233 = 21963608621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30553543217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102528520 + ... + 102528817.

It is an arithmetic number, because the mean of its divisors is an integer number (7689650175).

Almost surely, 230553543213 is an apocalyptic number.

It is an amenable number.

30553543213 is a deficient number, since it is larger than the sum of its proper divisors (205057487).

30553543213 is a wasteful number, since it uses less digits than its factorization.

30553543213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205057486.

The product of its (nonzero) digits is 81000, while the sum is 34.

The spelling of 30553543213 in words is "thirty billion, five hundred fifty-three million, five hundred forty-three thousand, two hundred thirteen".

Divisors: 1 149 205057337 30553543213