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61230349 = 151405499
BaseRepresentation
bin1110100110010…
…0110100001101
311021012211020201
43221210310031
5111133332344
610024213501
71342310065
oct351446415
9137184221
1061230349
11316212a4
121860a291
13c8bac9b
1481bc3a5
1555974d4
hex3a64d0d

61230349 has 4 divisors (see below), whose sum is σ = 61636000. Its totient is φ = 60824700.

The previous prime is 61230313. The next prime is 61230353. The reversal of 61230349 is 94303216.

61230349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61230349 - 211 = 61228301 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61230149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202599 + ... + 202900.

It is an arithmetic number, because the mean of its divisors is an integer number (15409000).

Almost surely, 261230349 is an apocalyptic number.

It is an amenable number.

61230349 is a deficient number, since it is larger than the sum of its proper divisors (405651).

61230349 is a wasteful number, since it uses less digits than its factorization.

61230349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405650.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 61230349 is about 7824.9823641974. The cubic root of 61230349 is about 394.1445976516.

The spelling of 61230349 in words is "sixty-one million, two hundred thirty thousand, three hundred forty-nine".

Divisors: 1 151 405499 61230349