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1311414208 = 26136412459
BaseRepresentation
bin100111000101010…
…1001011111000000
310101101122202002121
41032022221133000
510141210223313
6334044054024
744332560016
oct11612513700
93341582077
101311414208
116132939a5
12307234314
1317b903450
14c62528b6
157a1e728d
hex4e2a97c0

1311414208 has 56 divisors (see below), whose sum is σ = 2808030960. Its totient is φ = 604078080.

The previous prime is 1311414131. The next prime is 1311414211. The reversal of 1311414208 is 8024141131.

It is a congruent number.

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, 532083 + ... + 534541.

It is an arithmetic number, because the mean of its divisors is an integer number (50143410).

Almost surely, 21311414208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311414208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404015480).

1311414208 is an abundant number, since it is smaller than the sum of its proper divisors (1496616752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311414208 is a wasteful number, since it uses less digits than its factorization.

1311414208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125 (or 3115 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1311414208 is about 36213.4534116811. The cubic root of 1311414208 is about 1094.5777812424.

Adding to 1311414208 its reverse (8024141131), we get a palindrome (9335555339).

The spelling of 1311414208 in words is "one billion, three hundred eleven million, four hundred fourteen thousand, two hundred eight".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 208 416 641 832 1282 2459 2564 4918 5128 8333 9836 10256 16666 19672 20512 31967 33332 39344 41024 63934 66664 78688 127868 133328 157376 255736 266656 511472 533312 1022944 1576219 2045888 3152438 6304876 12609752 20490847 25219504 40981694 50439008 81963388 100878016 163926776 327853552 655707104 1311414208