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133430212 = 22171962209
BaseRepresentation
bin1111111001111…
…11101111000100
3100022001221211201
413330333233010
5233124231322
621123512244
73210065236
oct774775704
9308057751
10133430212
1169355103
1238828684
1321849bb6
1413a14256
15baa9d27
hex7f3fbc4

133430212 has 12 divisors (see below), whose sum is σ = 247238460. Its totient is φ = 62790656.

The previous prime is 133430173. The next prime is 133430221. The reversal of 133430212 is 212034331.

133430212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 123343236 + 10086976 = 11106^2 + 3176^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133430212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981037 + ... + 981172.

It is an arithmetic number, because the mean of its divisors is an integer number (20603205).

Almost surely, 2133430212 is an apocalyptic number.

It is an amenable number.

133430212 is a deficient number, since it is larger than the sum of its proper divisors (113808248).

133430212 is a wasteful number, since it uses less digits than its factorization.

133430212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962230 (or 1962228 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 133430212 is about 11551.1995913844. The cubic root of 133430212 is about 510.9966567005.

Adding to 133430212 its reverse (212034331), we get a palindrome (345464543).

The spelling of 133430212 in words is "one hundred thirty-three million, four hundred thirty thousand, two hundred twelve".

Divisors: 1 2 4 17 34 68 1962209 3924418 7848836 33357553 66715106 133430212