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1244011031 = 73103165449
BaseRepresentation
bin100101000100110…
…0001101000010111
310012200211022022122
41022021201220113
510021431323111
6323235250155
742553630214
oct11211415027
93180738278
101244011031
1158923699a
122a874995b
1316a963903
14bb308b0b
1574330cdb
hex4a261a17

1244011031 has 8 divisors (see below), whose sum is σ = 1273303200. Its totient is φ = 1215050112.

The previous prime is 1244011007. The next prime is 1244011033. The reversal of 1244011031 is 1301104421.

It is a happy number.

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 1244011031 - 222 = 1239816727 is a prime.

It is a super-2 number, since 2×12440110312 = 3095126890499365922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244011033) 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, 75206 + ... + 90243.

It is an arithmetic number, because the mean of its divisors is an integer number (159162900).

Almost surely, 21244011031 is an apocalyptic number.

1244011031 is a deficient number, since it is larger than the sum of its proper divisors (29292169).

1244011031 is a wasteful number, since it uses less digits than its factorization.

1244011031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165625.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1244011031 is about 35270.5405544060. The cubic root of 1244011031 is about 1075.4942111239.

Adding to 1244011031 its reverse (1301104421), we get a palindrome (2545115452).

The spelling of 1244011031 in words is "one billion, two hundred forty-four million, eleven thousand, thirty-one".

Divisors: 1 73 103 7519 165449 12077777 17041247 1244011031