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108946931 = 1721919841
BaseRepresentation
bin1100111111001…
…10010111110011
321121000002002112
412133212113303
5210342300211
614451035535
72462014352
oct637462763
9247002075
10108946931
1156552495
123059bbab
1319756c52
141067d999
15987088b
hex67e65f3

108946931 has 12 divisors (see below), whose sum is σ = 121829880. Its totient is φ = 97136640.

The previous prime is 108946919. The next prime is 108946933. The reversal of 108946931 is 139649801.

It is not a de Polignac number, because 108946931 - 26 = 108946867 is a prime.

It is a super-2 number, since 2×1089469312 = 23738867548637522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108946933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4430 + ... + 15411.

It is an arithmetic number, because the mean of its divisors is an integer number (10152490).

Almost surely, 2108946931 is an apocalyptic number.

108946931 is a deficient number, since it is larger than the sum of its proper divisors (12882949).

108946931 is a wasteful number, since it uses less digits than its factorization.

108946931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19894 (or 19877 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 108946931 is about 10437.7646553273. The cubic root of 108946931 is about 477.6080816714.

The spelling of 108946931 in words is "one hundred eight million, nine hundred forty-six thousand, nine hundred thirty-one".

Divisors: 1 17 19 289 323 5491 19841 337297 376979 5734049 6408643 108946931