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1223053481 = 13809116293
BaseRepresentation
bin100100011100110…
…0101000010101001
310011020101112222002
41020321211002221
510001100202411
6321210140345
742210532406
oct11071450251
93136345862
101223053481
11578422201
122a17216b5
131665066b0
14b86112ad
157259133b
hex48e650a9

1223053481 has 8 divisors (see below), whose sum is σ = 1318773960. Its totient is φ = 1127567232.

The previous prime is 1223053459. The next prime is 1223053483. The reversal of 1223053481 is 1843503221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10621081 + 1212432400 = 3259^2 + 34820^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1223053481 is a prime.

It is a super-2 number, since 2×12230534812 = 2991719634772434722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223053483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47630 + ... + 68663.

It is an arithmetic number, because the mean of its divisors is an integer number (164846745).

Almost surely, 21223053481 is an apocalyptic number.

It is an amenable number.

1223053481 is a deficient number, since it is larger than the sum of its proper divisors (95720479).

1223053481 is a wasteful number, since it uses less digits than its factorization.

1223053481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117115.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1223053481 is about 34972.1815304679. The cubic root of 1223053481 is about 1069.4204451648.

The spelling of 1223053481 in words is "one billion, two hundred twenty-three million, fifty-three thousand, four hundred eighty-one".

Divisors: 1 13 809 10517 116293 1511809 94081037 1223053481