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1244210031 = 33431071671
BaseRepresentation
bin100101000101001…
…0010001101101111
310012201012102022000
41022022102031233
510022004210111
6323243423343
742555416331
oct11212221557
93181172260
101244210031
11589362459
122a8824b53
1316aa0336c
14bb35b451
157436ec56
hex4a29236f

1244210031 has 16 divisors (see below), whose sum is σ = 1886142720. Its totient is φ = 810182520.

The previous prime is 1244210021. The next prime is 1244210053. The reversal of 1244210031 is 1300124421.

It is not a de Polignac number, because 1244210031 - 211 = 1244207983 is a prime.

It is a super-2 number, since 2×12442100312 = 3096117202482041922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1244209986 and 1244210013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244210021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534675 + ... + 536996.

It is an arithmetic number, because the mean of its divisors is an integer number (117883920).

Almost surely, 21244210031 is an apocalyptic number.

1244210031 is a deficient number, since it is larger than the sum of its proper divisors (641932689).

1244210031 is a wasteful number, since it uses less digits than its factorization.

1244210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071723 (or 1071717 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1244210031 is about 35273.3614927753. The cubic root of 1244210031 is about 1075.5515557218.

Adding to 1244210031 its reverse (1300124421), we get a palindrome (2544334452).

The spelling of 1244210031 in words is "one billion, two hundred forty-four million, two hundred ten thousand, thirty-one".

Divisors: 1 3 9 27 43 129 387 1161 1071671 3215013 9645039 28935117 46081853 138245559 414736677 1244210031