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30101032123 = 611039474937
BaseRepresentation
bin11100000010001010…
…010100110010111011
32212200210101212101121
4130002022110302323
5443121331011443
621454521330111
72113634360101
oct340212246273
985623355347
1030101032123
111184727aa58
125a00936937
132ab92aa616
141657a27c71
15bb29344ed
hex702294cbb

30101032123 has 8 divisors (see below), whose sum is σ = 30624002240. Its totient is φ = 29579014080.

The previous prime is 30101032109. The next prime is 30101032139. The reversal of 30101032123 is 32123010103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30101032123 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30101032097 and 30101032106.

It is not an unprimeable number, because it can be changed into a prime (30101032153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174090 + ... + 300847.

It is an arithmetic number, because the mean of its divisors is an integer number (3828000280).

Almost surely, 230101032123 is an apocalyptic number.

30101032123 is a deficient number, since it is larger than the sum of its proper divisors (522970117).

30101032123 is a wasteful number, since it uses less digits than its factorization.

30101032123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476037.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30101032123 its reverse (32123010103), we get a palindrome (62224042226).

The spelling of 30101032123 in words is "thirty billion, one hundred one million, thirty-two thousand, one hundred twenty-three".

Divisors: 1 61 1039 63379 474937 28971157 493459543 30101032123