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31740067107 = 3371785711527
BaseRepresentation
bin11101100011110110…
…101111110100100011
310000221000112110201000
4131203312233310203
51010000424121412
622325311443043
72202356055540
oct354366576443
9100830473630
1031740067107
1112508493221
126199826483
132cbaa2c8c8
14177159dbc7
15c5b7944dc
hex763dafd23

31740067107 has 64 divisors (see below), whose sum is σ = 56972298240. Its totient is φ = 17048890368.

The previous prime is 31740067097. The next prime is 31740067127. The reversal of 31740067107 is 70176004713.

It is not a de Polignac number, because 31740067107 - 216 = 31740001571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31740067127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2747778 + ... + 2759304.

It is an arithmetic number, because the mean of its divisors is an integer number (890192160).

Almost surely, 231740067107 is an apocalyptic number.

31740067107 is a deficient number, since it is larger than the sum of its proper divisors (25232231133).

31740067107 is a wasteful number, since it uses less digits than its factorization.

31740067107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12417 (or 12411 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The spelling of 31740067107 in words is "thirty-one billion, seven hundred forty million, sixty-seven thousand, one hundred seven".

Divisors: 1 3 7 9 17 21 27 51 63 119 153 189 357 459 857 1071 2571 3213 5999 7713 11527 14569 17997 23139 34581 43707 53991 80689 101983 103743 131121 161973 195959 242067 305949 311229 393363 587877 726201 917847 1371713 1763631 2178603 2753541 4115139 5290893 9878639 12345417 29635917 37036251 69150473 88907751 167936863 207451419 266723253 503810589 622354257 1175558041 1511431767 1867062771 3526674123 4534295301 10580022369 31740067107