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61231041 = 3237183877
BaseRepresentation
bin1110100110010…
…0111111000001
311021012212012100
43221210333001
5111133343131
610024221013
71342312104
oct351447701
9137185170
1061231041
1131621873
121860a769
13c8bb3b1
1481bc73b
1555977e6
hex3a64fc1

61231041 has 12 divisors (see below), whose sum is σ = 90835732. Its totient is φ = 39717216.

The previous prime is 61231031. The next prime is 61231057. The reversal of 61231041 is 14013216.

It is a happy number.

61231041 is a `hidden beast` number, since 612 + 3 + 10 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56565441 + 4665600 = 7521^2 + 2160^2 .

It is not a de Polignac number, because 61231041 - 215 = 61198273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61231031) 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, 91606 + ... + 92271.

Almost surely, 261231041 is an apocalyptic number.

It is an amenable number.

61231041 is a deficient number, since it is larger than the sum of its proper divisors (29604691).

61231041 is a wasteful number, since it uses less digits than its factorization.

61231041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183920 (or 183917 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 61231041 is about 7825.0265814245. The cubic root of 61231041 is about 394.1460824656.

Adding to 61231041 its reverse (14013216), we get a palindrome (75244257).

It can be divided in two parts, 6 and 1231041, that multiplied together give a triangular number (7386246 = T3843).

The spelling of 61231041 in words is "sixty-one million, two hundred thirty-one thousand, forty-one".

Divisors: 1 3 9 37 111 333 183877 551631 1654893 6803449 20410347 61231041