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1312304001 = 31728191571
BaseRepresentation
bin100111000111000…
…0010101110000001
310101110022221122220
41032032002232001
510141422212001
6334115121253
744343254121
oct11616025601
93343287586
101312304001
11613841468
123075a3229
1317bb55458
14c6404c81
157a320c36
hex4e382b81

1312304001 has 16 divisors (see below), whose sum is σ = 1859277888. Its totient is φ = 820467200.

The previous prime is 1312303999. The next prime is 1312304011. The reversal of 1312304001 is 1004032131.

It is a cyclic number.

It is not a de Polignac number, because 1312304001 - 21 = 1312303999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312304011) 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 15 ways as a sum of consecutive naturals, for example, 31455 + ... + 60116.

It is an arithmetic number, because the mean of its divisors is an integer number (116204868).

Almost surely, 21312304001 is an apocalyptic number.

It is an amenable number.

1312304001 is a deficient number, since it is larger than the sum of its proper divisors (546973887).

1312304001 is a wasteful number, since it uses less digits than its factorization.

1312304001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91872.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1312304001 is about 36225.7367212870. The cubic root of 1312304001 is about 1094.8252818543.

Adding to 1312304001 its reverse (1004032131), we get a palindrome (2316336132).

The spelling of 1312304001 in words is "one billion, three hundred twelve million, three hundred four thousand, one".

Divisors: 1 3 17 51 281 843 4777 14331 91571 274713 1556707 4670121 25731451 77194353 437434667 1312304001