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1223013133 = 17371944377
BaseRepresentation
bin100100011100101…
…1011001100001101
310011020022111121201
41020321123030031
510001042410013
6321205225501
742210303646
oct11071331415
93136274551
101223013133
115783a4961
122a1702291
131664c1214
14b86006cd
15725843dd
hex48e5b30d

1223013133 has 8 divisors (see below), whose sum is σ = 1329954552. Its totient is φ = 1119960576.

The previous prime is 1223013097. The next prime is 1223013137. The reversal of 1223013133 is 3313103221.

It can be written as a sum of positive squares in 4 ways, for example, as 658332964 + 564680169 = 25658^2 + 23763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223013133 - 221 = 1220915981 is a prime.

It is a super-2 number, since 2×12230131332 = 2991522246980951378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223013133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223013137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971560 + ... + 972817.

It is an arithmetic number, because the mean of its divisors is an integer number (166244319).

Almost surely, 21223013133 is an apocalyptic number.

It is an amenable number.

1223013133 is a deficient number, since it is larger than the sum of its proper divisors (106941419).

1223013133 is a wasteful number, since it uses less digits than its factorization.

1223013133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944431.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1223013133 is about 34971.6046672154. The cubic root of 1223013133 is about 1069.4086851311.

Adding to 1223013133 its reverse (3313103221), we get a palindrome (4536116354).

The spelling of 1223013133 in words is "one billion, two hundred twenty-three million, thirteen thousand, one hundred thirty-three".

Divisors: 1 17 37 629 1944377 33054409 71941949 1223013133