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30041631 = 331112653
BaseRepresentation
bin111001010011…
…0011000011111
32002112021101000
41302212120133
530142313011
62551521343
7513230634
oct162463037
962467330
1030041631
1115a597a4
12a089253
1362bac19
143dc018b
152986356
hex1ca661f

30041631 has 8 divisors (see below), whose sum is σ = 44506160. Its totient is φ = 20027736.

The previous prime is 30041629. The next prime is 30041659. The reversal of 30041631 is 13614003.

30041631 is a `hidden beast` number, since 30 + 0 + 4 + 1 + 631 = 666.

It is not a de Polignac number, because 30041631 - 21 = 30041629 is a prime.

It is a super-2 number, since 2×300416312 = 1804999186280322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30041621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556300 + ... + 556353.

It is an arithmetic number, because the mean of its divisors is an integer number (5563270).

Almost surely, 230041631 is an apocalyptic number.

30041631 is a deficient number, since it is larger than the sum of its proper divisors (14464529).

30041631 is a wasteful number, since it uses less digits than its factorization.

30041631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112662 (or 1112656 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30041631 is about 5481.0246304865. The cubic root of 30041631 is about 310.8669143801.

Adding to 30041631 its reverse (13614003), we get a palindrome (43655634).

The spelling of 30041631 in words is "thirty million, forty-one thousand, six hundred thirty-one".

Divisors: 1 3 9 27 1112653 3337959 10013877 30041631