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30331140240 = 2435177434103
BaseRepresentation
bin11100001111111000…
…000111100010010000
32220021211101120101110
4130033320013202100
5444104232441430
621533421333320
72122430303202
oct341770074220
986254346343
1030331140240
1111955157655
125a65a07240
132b24b76b7b
14167a406772
15bc7c397b0
hex70fe07890

30331140240 has 80 divisors (see below), whose sum is σ = 99557520768. Its totient is φ = 7612520448.

The previous prime is 30331140233. The next prime is 30331140241. The reversal of 30331140240 is 4204113303.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (30331140241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3712972 + ... + 3721131.

Almost surely, 230331140240 is an apocalyptic number.

30331140240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30331140240 is an abundant number, since it is smaller than the sum of its proper divisors (69226380528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30331140240 is a wasteful number, since it uses less digits than its factorization.

30331140240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7434136 (or 7434130 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 30331140240 its reverse (4204113303), we get a palindrome (34535253543).

The spelling of 30331140240 in words is "thirty billion, three hundred thirty-one million, one hundred forty thousand, two hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 34 40 48 51 60 68 80 85 102 120 136 170 204 240 255 272 340 408 510 680 816 1020 1360 2040 4080 7434103 14868206 22302309 29736412 37170515 44604618 59472824 74341030 89209236 111511545 118945648 126379751 148682060 178418472 223023090 252759502 297364120 356836944 379139253 446046180 505519004 594728240 631898755 758278506 892092360 1011038008 1263797510 1516557012 1784184720 1895696265 2022076016 2527595020 3033114024 3791392530 5055190040 6066228048 7582785060 10110380080 15165570120 30331140240