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1311202301 = 10160121601
BaseRepresentation
bin100111000100111…
…0101101111111101
310101101020222102012
41032021311233331
510141131433201
6334035341005
744331015143
oct11611655775
93341228365
101311202301
11613159772
12307151765
1317b85ab66
14c61d9593
157a1a45bb
hex4e275bfd

1311202301 has 8 divisors (see below), whose sum is σ = 1326449208. Its totient is φ = 1296000000.

The previous prime is 1311202297. The next prime is 1311202339. The reversal of 1311202301 is 1032021131.

It can be written as a sum of positive squares in 4 ways, for example, as 1043225401 + 267976900 = 32299^2 + 16370^2 .

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 1311202301 - 22 = 1311202297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311202391) 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, 49901 + ... + 71501.

It is an arithmetic number, because the mean of its divisors is an integer number (165806151).

Almost surely, 21311202301 is an apocalyptic number.

It is an amenable number.

1311202301 is a deficient number, since it is larger than the sum of its proper divisors (15246907).

1311202301 is a wasteful number, since it uses less digits than its factorization.

1311202301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22303.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1311202301 is about 36210.5274885633. The cubic root of 1311202301 is about 1094.5188216890.

Adding to 1311202301 its reverse (1032021131), we get a palindrome (2343223432).

The spelling of 1311202301 in words is "one billion, three hundred eleven million, two hundred two thousand, three hundred one".

Divisors: 1 101 601 21601 60701 2181701 12982201 1311202301