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30907511941 = 231343804867
BaseRepresentation
bin11100110010001110…
…110011010010000101
32221202222221021201111
4130302032303102011
51001244310340231
622110531125021
72142626342155
oct346216632205
987688837644
1030907511941
11121205371a9
125ba6a43771
132bb73bba07
1416d2b9c765
15c0d63b4b1
hex7323b3485

30907511941 has 4 divisors (see below), whose sum is σ = 32251316832. Its totient is φ = 29563707052.

The previous prime is 30907511911. The next prime is 30907512017. The reversal of 30907511941 is 14911570903.

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: 14911570903 = 95911155473.

It is a cyclic number.

It is not a de Polignac number, because 30907511941 - 217 = 30907380869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30907511894 and 30907511903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30907511911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671902411 + ... + 671902456.

It is an arithmetic number, because the mean of its divisors is an integer number (8062829208).

Almost surely, 230907511941 is an apocalyptic number.

It is an amenable number.

30907511941 is a deficient number, since it is larger than the sum of its proper divisors (1343804891).

30907511941 is a wasteful number, since it uses less digits than its factorization.

30907511941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343804890.

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 30907511941 in words is "thirty billion, nine hundred seven million, five hundred eleven thousand, nine hundred forty-one".

Divisors: 1 23 1343804867 30907511941