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30941191 = 149281739
BaseRepresentation
bin111011000001…
…0000000000111
32011012222100001
41312002000013
530410104231
63023102131
7523665361
oct166020007
964188301
1030941191
1116513636
12a441947
1365444c8
144175d31
152ab2b61
hex1d82007

30941191 has 8 divisors (see below), whose sum is σ = 31302000. Its totient is φ = 30582720.

The previous prime is 30941189. The next prime is 30941237. The reversal of 30941191 is 19114903.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30941191 - 21 = 30941189 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 (30941111) 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, 41500 + ... + 42238.

It is an arithmetic number, because the mean of its divisors is an integer number (3912750).

Almost surely, 230941191 is an apocalyptic number.

30941191 is a deficient number, since it is larger than the sum of its proper divisors (360809).

30941191 is a wasteful number, since it uses less digits than its factorization.

30941191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 30941191 is about 5562.4806516517. The cubic root of 30941191 is about 313.9392927658.

The spelling of 30941191 in words is "thirty million, nine hundred forty-one thousand, one hundred ninety-one".

Divisors: 1 149 281 739 41869 110111 207659 30941191