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61414231 = 139441829
BaseRepresentation
bin1110101001000…
…1101101010111
311021120011111011
43222101231113
5111210223411
610032153051
71344004144
oct352215527
9137504434
1061414231
113173746a
1218698787
13c9538a8
1482293cb
1555d1c21
hex3a91b57

61414231 has 4 divisors (see below), whose sum is σ = 61856200. Its totient is φ = 60972264.

The previous prime is 61414211. The next prime is 61414237. The reversal of 61414231 is 13241416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61414231 - 213 = 61406039 is a prime.

It is a super-3 number, since 3×614142313 (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61414237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220776 + ... + 221053.

It is an arithmetic number, because the mean of its divisors is an integer number (15464050).

Almost surely, 261414231 is an apocalyptic number.

61414231 is a deficient number, since it is larger than the sum of its proper divisors (441969).

61414231 is a wasteful number, since it uses less digits than its factorization.

61414231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441968.

The product of its digits is 576, while the sum is 22.

The square root of 61414231 is about 7836.7232310450. The cubic root of 61414231 is about 394.5387576690.

Adding to 61414231 its reverse (13241416), we get a palindrome (74655647).

The spelling of 61414231 in words is "sixty-one million, four hundred fourteen thousand, two hundred thirty-one".

Divisors: 1 139 441829 61414231