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1223103130 = 25294217597
BaseRepresentation
bin100100011100111…
…0001001010011010
310011020111002001221
41020321301022122
510001103300010
6321211202254
742211130224
oct11071611232
93136432057
101223103130
11578456537
122a174638a
13166523182
14b8625414
15725a0dda
hex48e7129a

1223103130 has 16 divisors (see below), whose sum is σ = 2277502920. Its totient is φ = 472370752.

The previous prime is 1223103121. The next prime is 1223103143. The reversal of 1223103130 is 313013221.

It can be written as a sum of positive squares in 4 ways, for example, as 909565281 + 313537849 = 30159^2 + 17707^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2108509 + ... + 2109088.

Almost surely, 21223103130 is an apocalyptic number.

1223103130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223103130 is a deficient number, since it is larger than the sum of its proper divisors (1054399790).

1223103130 is a wasteful number, since it uses less digits than its factorization.

1223103130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217633.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1223103130 is about 34972.8913588797. The cubic root of 1223103130 is about 1069.4349157605.

Adding to 1223103130 its reverse (313013221), we get a palindrome (1536116351).

The spelling of 1223103130 in words is "one billion, two hundred twenty-three million, one hundred three thousand, one hundred thirty".

Divisors: 1 2 5 10 29 58 145 290 4217597 8435194 21087985 42175970 122310313 244620626 611551565 1223103130