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30120143151 = 3723137178639
BaseRepresentation
bin11100000011010011…
…001110100100101111
32212202010100210210110
4130003103032210233
5443141224040101
621500443111103
72114255664300
oct340323164457
985663323713
1030120143151
111185704339a
125a07212493
132ac023c217
14165a3a07a7
15bb445bcd6
hex7034ce92f

30120143151 has 48 divisors (see below), whose sum is σ = 49527582720. Its totient is φ = 16206039360.

The previous prime is 30120143149. The next prime is 30120143171. The reversal of 30120143151 is 15134102103.

It is not a de Polignac number, because 30120143151 - 21 = 30120143149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120143171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79290 + ... + 257928.

It is an arithmetic number, because the mean of its divisors is an integer number (1031824640).

Almost surely, 230120143151 is an apocalyptic number.

30120143151 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30120143151 is a deficient number, since it is larger than the sum of its proper divisors (19407439569).

30120143151 is a wasteful number, since it uses less digits than its factorization.

30120143151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178724 (or 178717 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 30120143151 its reverse (15134102103), we get a palindrome (45254245254).

The spelling of 30120143151 in words is "thirty billion, one hundred twenty million, one hundred forty-three thousand, one hundred fifty-one".

Divisors: 1 3 7 21 31 37 49 93 111 147 217 259 651 777 1147 1519 1813 3441 4557 5439 8029 24087 56203 168609 178639 535917 1250473 3751419 5537809 6609643 8753311 16613427 19828929 26259933 38764663 46267501 116293989 138802503 204898933 271352641 323872507 614696799 814057923 971617521 1434292531 4302877593 10040047717 30120143151