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30331485 = 32517311279
BaseRepresentation
bin111001110110…
…1001001011101
32010001222222100
41303231021131
530231101420
63002035313
7515545662
oct163551135
963058870
1030331485
1116137548
12a1a8b39
13638cb32
144057a69
1529e2190
hex1ced25d

30331485 has 48 divisors (see below), whose sum is σ = 57507840. Its totient is φ = 14722560.

The previous prime is 30331471. The next prime is 30331493. The reversal of 30331485 is 58413303.

It is a happy number.

It is not a de Polignac number, because 30331485 - 211 = 30329437 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23076 + ... + 24354.

It is an arithmetic number, because the mean of its divisors is an integer number (1198080).

Almost surely, 230331485 is an apocalyptic number.

It is an amenable number.

30331485 is a deficient number, since it is larger than the sum of its proper divisors (27176355).

30331485 is a wasteful number, since it uses less digits than its factorization.

30331485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 30331485 is about 5507.4027453964. The cubic root of 30331485 is about 311.8635066172.

Adding to 30331485 its reverse (58413303), we get a palindrome (88744788).

The spelling of 30331485 in words is "thirty million, three hundred thirty-one thousand, four hundred eighty-five".

Divisors: 1 3 5 9 15 17 31 45 51 85 93 153 155 255 279 465 527 765 1279 1395 1581 2635 3837 4743 6395 7905 11511 19185 21743 23715 39649 57555 65229 108715 118947 195687 198245 326145 356841 594735 674033 978435 1784205 2022099 3370165 6066297 10110495 30331485