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30919143763 = 53583380071
BaseRepresentation
bin11100110010111011…
…001011000101010011
32221210210211020120201
4130302323023011103
51001310300100023
622112024320031
72143130246164
oct346273130523
987723736521
1030919143763
1112127061382
125baa913017
132bb9932251
1416d454976b
15c0e687bad
hex732ecb153

30919143763 has 4 divisors (see below), whose sum is σ = 31502523888. Its totient is φ = 30335763640.

The previous prime is 30919143757. The next prime is 30919143779. The reversal of 30919143763 is 36734191903.

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

It is a cyclic number.

It is not a de Polignac number, because 30919143763 - 225 = 30885589331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30919143713) 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, 291689983 + ... + 291690088.

It is an arithmetic number, because the mean of its divisors is an integer number (7875630972).

Almost surely, 230919143763 is an apocalyptic number.

30919143763 is a deficient number, since it is larger than the sum of its proper divisors (583380125).

30919143763 is an equidigital number, since it uses as much as digits as its factorization.

30919143763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583380124.

The product of its (nonzero) digits is 367416, while the sum is 46.

The spelling of 30919143763 in words is "thirty billion, nine hundred nineteen million, one hundred forty-three thousand, seven hundred sixty-three".

Divisors: 1 53 583380071 30919143763