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30123752023 = 136122133543
BaseRepresentation
bin11100000011100000…
…111111101001010111
32212202101011011020101
4130003200333221113
5443143140031043
621501052314531
72114331444631
oct340340775127
985671134211
1030123752023
1111859088832
125a08472a47
132ac0c03a51
14165aa5da51
15bb492124d
hex70383fa57

30123752023 has 4 divisors (see below), whose sum is σ = 30145886928. Its totient is φ = 30101617120.

The previous prime is 30123751969. The next prime is 30123752069. The reversal of 30123752023 is 32025732103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30123752023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30123751982 and 30123752000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123758023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11065411 + ... + 11068132.

It is an arithmetic number, because the mean of its divisors is an integer number (7536471732).

Almost surely, 230123752023 is an apocalyptic number.

30123752023 is a deficient number, since it is larger than the sum of its proper divisors (22134905).

30123752023 is a wasteful number, since it uses less digits than its factorization.

30123752023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22134904.

The product of its (nonzero) digits is 7560, while the sum is 28.

The spelling of 30123752023 in words is "thirty billion, one hundred twenty-three million, seven hundred fifty-two thousand, twenty-three".

Divisors: 1 1361 22133543 30123752023