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331608147 = 31331274283
BaseRepresentation
bin10011110000111…
…111000001010011
3212002222102212020
4103300333001103
51134342430042
652523302523
711134423413
oct2360770123
9762872766
10331608147
11160203122
129307aa43
1353916a50
1432080643
151e1a43ec
hex13c3f053

331608147 has 16 divisors (see below), whose sum is σ = 491516928. Its totient is φ = 197483040.

The previous prime is 331608133. The next prime is 331608187. The reversal of 331608147 is 741806133.

It is not a de Polignac number, because 331608147 - 28 = 331607891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331608187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135933 + ... + 138350.

It is an arithmetic number, because the mean of its divisors is an integer number (30719808).

Almost surely, 2331608147 is an apocalyptic number.

331608147 is a deficient number, since it is larger than the sum of its proper divisors (159908781).

331608147 is a wasteful number, since it uses less digits than its factorization.

331608147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274330.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 331608147 is about 18210.1111199246. Note that the first 5 decimals coincide. The cubic root of 331608147 is about 692.1630273730.

The spelling of 331608147 in words is "three hundred thirty-one million, six hundred eight thousand, one hundred forty-seven".

Divisors: 1 3 13 31 39 93 403 1209 274283 822849 3565679 8502773 10697037 25508319 110536049 331608147