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30314497639 = 37819310747
BaseRepresentation
bin11100001110111000…
…101000011001100111
32220020200002001000211
4130032320220121213
5444041002411024
621532024520251
72122135656406
oct341670503147
986220061024
1030314497639
111194681a838
125a60320087
132b2159a98a
14167811363d
15bc654d594
hex70ee28667

30314497639 has 4 divisors (see below), whose sum is σ = 31133808424. Its totient is φ = 29495186856.

The previous prime is 30314497607. The next prime is 30314497657. The reversal of 30314497639 is 93679441303.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93679441303 = 713382777329.

It is a cyclic number.

It is not a de Polignac number, because 30314497639 - 25 = 30314497607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30314497592 and 30314497601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30314491639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409655337 + ... + 409655410.

It is an arithmetic number, because the mean of its divisors is an integer number (7783452106).

Almost surely, 230314497639 is an apocalyptic number.

30314497639 is a deficient number, since it is larger than the sum of its proper divisors (819310785).

30314497639 is an equidigital number, since it uses as much as digits as its factorization.

30314497639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819310784.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The spelling of 30314497639 in words is "thirty billion, three hundred fourteen million, four hundred ninety-seven thousand, six hundred thirty-nine".

Divisors: 1 37 819310747 30314497639