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1310210001 = 32145578889
BaseRepresentation
bin100111000011000…
…0011011111010001
310101022101120020100
41032012003133101
510140403210001
6334002203013
744316413142
oct11606033721
93338346210
101310210001
11612641191
12306953469
1317b5a12b9
14c601bac9
157a05a586
hex4e1837d1

1310210001 has 6 divisors (see below), whose sum is σ = 1892525570. Its totient is φ = 873473328.

The previous prime is 1310209939. The next prime is 1310210047. The reversal of 1310210001 is 1000120131.

It can be written as a sum of positive squares in only one way, i.e., 809345601 + 500864400 = 28449^2 + 22380^2 .

It is not a de Polignac number, because 1310210001 - 217 = 1310078929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 145578889 = 1310210001 / (1 + 3 + 1 + 0 + 2 + 1 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1310210051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72789436 + ... + 72789453.

Almost surely, 21310210001 is an apocalyptic number.

It is an amenable number.

1310210001 is a deficient number, since it is larger than the sum of its proper divisors (582315569).

1310210001 is a wasteful number, since it uses less digits than its factorization.

1310210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145578895 (or 145578892 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1310210001 is about 36196.8230788283. The cubic root of 1310210001 is about 1094.2426463750.

Adding to 1310210001 its reverse (1000120131), we get a palindrome (2310330132).

The spelling of 1310210001 in words is "one billion, three hundred ten million, two hundred ten thousand, one".

Divisors: 1 3 9 145578889 436736667 1310210001