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30213012311405 = 5711345112273923
BaseRepresentation
bin1101101111010100000111…
…10111011100110101101101
310221222100001202221100111222
412313222003313130311231
512430002222122431110
6144131355524153125
76235550416225160
oct667520367346555
9127870052840458
1030213012311405
1196992a2886420
12347b5988387a5
1313b20c8550a71
147664636bdad7
15375d9a7d2c55
hex1b7a83ddcd6d

30213012311405 has 32 divisors (see below), whose sum is σ = 45203135090688. Its totient is φ = 18833531572800.

The previous prime is 30213012311399. The next prime is 30213012311407. The reversal of 30213012311405 is 50411321031203.

It is not a de Polignac number, because 30213012311405 - 28 = 30213012311149 is a prime.

It is a super-2 number, since 2×302130123114052 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30213012311407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12149774 + ... + 14423696.

It is an arithmetic number, because the mean of its divisors is an integer number (1412597971584).

Almost surely, 230213012311405 is an apocalyptic number.

30213012311405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30213012311405 is a deficient number, since it is larger than the sum of its proper divisors (14990122779283).

30213012311405 is a wasteful number, since it uses less digits than its factorization.

30213012311405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308457.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 30213012311405 its reverse (50411321031203), we get a palindrome (80624333342608).

The spelling of 30213012311405 in words is "thirty trillion, two hundred thirteen billion, twelve million, three hundred eleven thousand, four hundred five".

Divisors: 1 5 7 11 35 55 77 385 34511 172555 241577 379621 1207885 1898105 2273923 2657347 11369615 13286735 15917461 25013153 79587305 125065765 175092071 875460355 78475356653 392376783265 549327496571 863228923183 2746637482855 4316144615915 6042602462281 30213012311405