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30232880549 = 71425815219
BaseRepresentation
bin11100001010000001…
…010010010110100101
32220000222111110102122
4130022001102112211
5443404104134144
621515551315325
72120125146614
oct341201222645
986028443378
1030232880549
11119047446a3
125a38b1bb45
132b0a6c2541
14166b34987b
15bbe2ca7ee
hex70a0525a5

30232880549 has 4 divisors (see below), whose sum is σ = 30658695840. Its totient is φ = 29807065260.

The previous prime is 30232880501. The next prime is 30232880591. The reversal of 30232880549 is 94508823203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94508823203 = 372554292519.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30232880549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30232880599) 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, 212907539 + ... + 212907680.

It is an arithmetic number, because the mean of its divisors is an integer number (7664673960).

Almost surely, 230232880549 is an apocalyptic number.

It is an amenable number.

30232880549 is a deficient number, since it is larger than the sum of its proper divisors (425815291).

30232880549 is an equidigital number, since it uses as much as digits as its factorization.

30232880549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425815290.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 30232880549 in words is "thirty billion, two hundred thirty-two million, eight hundred eighty thousand, five hundred forty-nine".

Divisors: 1 71 425815219 30232880549