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30771341 = 193159437
BaseRepresentation
bin111010101100…
…0100010001101
32010220100100022
41311120202031
530334140331
63015311525
7522360236
oct165304215
963810308
1030771341
1116407a67
12a37b5a5
1364b50c3
14413008d
152a7c67b
hex1d5888d

30771341 has 4 divisors (see below), whose sum is σ = 30930972. Its totient is φ = 30611712.

The previous prime is 30771287. The next prime is 30771347. The reversal of 30771341 is 14317703.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8008900 + 22762441 = 2830^2 + 4771^2 .

It is a cyclic number.

It is not a de Polignac number, because 30771341 - 26 = 30771277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30771341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30771347) 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, 79526 + ... + 79911.

It is an arithmetic number, because the mean of its divisors is an integer number (7732743).

Almost surely, 230771341 is an apocalyptic number.

It is an amenable number.

30771341 is a deficient number, since it is larger than the sum of its proper divisors (159631).

30771341 is a wasteful number, since it uses less digits than its factorization.

30771341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159630.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 30771341 is about 5547.1921726221. The cubic root of 30771341 is about 313.3637874680.

The spelling of 30771341 in words is "thirty million, seven hundred seventy-one thousand, three hundred forty-one".

Divisors: 1 193 159437 30771341