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101812941 = 3211312549
BaseRepresentation
bin1100001000110…
…00101011001101
321002120122002200
412010120223031
5202031003231
614034112113
72344252506
oct604305315
9232518080
10101812941
115251a62a
122a11b639
1318129a59
14d743bad
158e11be6
hex6118acd

101812941 has 6 divisors (see below), whose sum is σ = 147063150. Its totient is φ = 67875288.

The previous prime is 101812903. The next prime is 101812943. The reversal of 101812941 is 149218101.

It can be written as a sum of positive squares in only one way, i.e., 100580841 + 1232100 = 10029^2 + 1110^2 .

It is not a de Polignac number, because 101812941 - 29 = 101812429 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101812943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5656266 + ... + 5656283.

It is an arithmetic number, because the mean of its divisors is an integer number (24510525).

Almost surely, 2101812941 is an apocalyptic number.

It is an amenable number.

101812941 is a deficient number, since it is larger than the sum of its proper divisors (45250209).

101812941 is a wasteful number, since it uses less digits than its factorization.

101812941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11312555 (or 11312552 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 101812941 is about 10090.2398881295. The cubic root of 101812941 is about 466.9470767686.

The spelling of 101812941 in words is "one hundred one million, eight hundred twelve thousand, nine hundred forty-one".

Divisors: 1 3 9 11312549 33937647 101812941