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30541202531 = 78963897673
BaseRepresentation
bin11100011100011001…
…011100010001100011
32220211110122211200022
4130130121130101203
51000022021440111
622010323544055
72130560636540
oct343431342143
986743584608
1030541202531
1111a52792554
125b0422b02b
132b59545198
14169a287bc7
15bdb3d02db
hex71c65c463

30541202531 has 16 divisors (see below), whose sum is σ = 35306539200. Its totient is φ = 25876612608.

The previous prime is 30541202521. The next prime is 30541202543. The reversal of 30541202531 is 13520214503.

It is a happy number.

It is not a de Polignac number, because 30541202531 - 26 = 30541202467 is a prime.

It is a super-2 number, since 2×305412025312 (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 30541202531.

It is not an unprimeable number, because it can be changed into a prime (30541202521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3976511 + ... + 3984183.

It is an arithmetic number, because the mean of its divisors is an integer number (2206658700).

Almost surely, 230541202531 is an apocalyptic number.

30541202531 is a deficient number, since it is larger than the sum of its proper divisors (4765336669).

30541202531 is an equidigital number, since it uses as much as digits as its factorization.

30541202531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14158.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 30541202531 in words is "thirty billion, five hundred forty-one million, two hundred two thousand, five hundred thirty-one".

Divisors: 1 7 89 623 6389 7673 44723 53711 568621 682897 3980347 4780279 49022797 343159579 4363028933 30541202531