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30157287317 = 475928873767
BaseRepresentation
bin11100000101100000…
…111010111110010101
32212211201020221000022
4130011200322332111
5443230231143232
621504251154525
72115216466313
oct340540727625
985751227008
1030157287317
1111876003353
125a17745a45
132ac7b45c11
1416612ad0b3
15bb7847812
hex70583af95

30157287317 has 16 divisors (see below), whose sum is σ = 31340113920. Its totient is φ = 28997627568.

The previous prime is 30157287301. The next prime is 30157287359. The reversal of 30157287317 is 71378275103.

It is a cyclic number.

It is not a de Polignac number, because 30157287317 - 24 = 30157287301 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 (30157287367) 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, 8003768 + ... + 8007534.

It is an arithmetic number, because the mean of its divisors is an integer number (1958757120).

Almost surely, 230157287317 is an apocalyptic number.

It is an amenable number.

30157287317 is a deficient number, since it is larger than the sum of its proper divisors (1182826603).

30157287317 is a wasteful number, since it uses less digits than its factorization.

30157287317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760.

The product of its (nonzero) digits is 246960, while the sum is 44.

The spelling of 30157287317 in words is "thirty billion, one hundred fifty-seven million, two hundred eighty-seven thousand, three hundred seventeen".

Divisors: 1 47 59 2773 2887 3767 135689 170333 177049 222253 8005651 10445891 10875329 511140463 641644411 30157287317