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1223232130 = 25412983493
BaseRepresentation
bin100100011101001…
…0000101010000010
310011020201122000201
41020322100222002
510001121412010
6321214035414
742212205301
oct11072205202
93136648021
101223232130
1157853444a
122a17a8b6a
13166569ac3
14b865a438
15725c923a
hex48e90a82

1223232130 has 16 divisors (see below), whose sum is σ = 2255521464. Its totient is φ = 477358720.

The previous prime is 1223232097. The next prime is 1223232139. The reversal of 1223232130 is 312323221.

Adding to 1223232130 its reverse (312323221), we get a palindrome (1535555351).

It can be written as a sum of positive squares in 4 ways, for example, as 899340121 + 323892009 = 29989^2 + 17997^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1223232098 and 1223232107.

It is not an unprimeable number, because it can be changed into a prime (1223232139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1491337 + ... + 1492156.

Almost surely, 21223232130 is an apocalyptic number.

1223232130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223232130 is a deficient number, since it is larger than the sum of its proper divisors (1032289334).

1223232130 is a wasteful number, since it uses less digits than its factorization.

1223232130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983541.

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

The square root of 1223232130 is about 34974.7355958555. The cubic root of 1223232130 is about 1069.4725120054.

The spelling of 1223232130 in words is "one billion, two hundred twenty-three million, two hundred thirty-two thousand, one hundred thirty".

Divisors: 1 2 5 10 41 82 205 410 2983493 5966986 14917465 29834930 122323213 244646426 611616065 1223232130