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30312544441 = 45236701867
BaseRepresentation
bin11100001110110001…
…001011100010111001
32220020112101210202011
4130032301023202321
5444040002410231
621531515005521
72122113243064
oct341661134271
986215353664
1030312544441
1111945706323
125a5b7398a1
132b2106593a
141677b658db
15bc62b49b1
hex70ec4b8b9

30312544441 has 4 divisors (see below), whose sum is σ = 30319250832. Its totient is φ = 30305838052.

The previous prime is 30312544429. The next prime is 30312544459. The reversal of 30312544441 is 14444521303.

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: 14444521303 = 87869164387.

It is a cyclic number.

It is not a de Polignac number, because 30312544441 - 231 = 28165060793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30312544481) 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, 3346411 + ... + 3355456.

It is an arithmetic number, because the mean of its divisors is an integer number (7579812708).

Almost surely, 230312544441 is an apocalyptic number.

It is an amenable number.

30312544441 is a deficient number, since it is larger than the sum of its proper divisors (6706391).

30312544441 is an equidigital number, since it uses as much as digits as its factorization.

30312544441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706390.

The product of its (nonzero) digits is 23040, while the sum is 31.

The spelling of 30312544441 in words is "thirty billion, three hundred twelve million, five hundred forty-four thousand, four hundred forty-one".

Divisors: 1 4523 6701867 30312544441