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34540031215 = 579307284831
BaseRepresentation
bin100000001010101111…
…110000110011101111
310022011011011101101101
4200022233300303233
51031214221444330
623511212423531
72331635264314
oct401257606357
9108134141341
1034540031215
1113714a46748
12683b477ba7
133345b466c1
1419593b4d0b
15d724c34ca
hex80abf0cef

34540031215 has 16 divisors (see below), whose sum is σ = 42109562880. Its totient is φ = 27193289760.

The previous prime is 34540031191. The next prime is 34540031219. The reversal of 34540031215 is 51213004543.

It is a de Polignac number, because none of the positive numbers 2k-34540031215 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34540031219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21151 + ... + 263680.

It is an arithmetic number, because the mean of its divisors is an integer number (2631847680).

Almost surely, 234540031215 is an apocalyptic number.

34540031215 is a deficient number, since it is larger than the sum of its proper divisors (7569531665).

34540031215 is a wasteful number, since it uses less digits than its factorization.

34540031215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285222.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 34540031215 its reverse (51213004543), we get a palindrome (85753035758).

The spelling of 34540031215 in words is "thirty-four billion, five hundred forty million, thirty-one thousand, two hundred fifteen".

Divisors: 1 5 79 307 395 1535 24253 121265 284831 1424155 22501649 87443117 112508245 437215585 6908006243 34540031215