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1304431001 = 9629135469
BaseRepresentation
bin100110111000000…
…0000100110011001
310100220111221221022
41031300000212121
510132413243001
6333234252225
744216323556
oct11560004631
93326457838
101304431001
1160a354355
12304a27075
1317a329a83
14c5355a2d
15797b811b
hex4dc00999

1304431001 has 4 divisors (see below), whose sum is σ = 1304576100. Its totient is φ = 1304285904.

The previous prime is 1304430979. The next prime is 1304431003. The reversal of 1304431001 is 1001344031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 993825625 + 310605376 = 31525^2 + 17624^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304431001 - 26 = 1304430937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304431003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58106 + ... + 77363.

It is an arithmetic number, because the mean of its divisors is an integer number (326144025).

Almost surely, 21304431001 is an apocalyptic number.

It is an amenable number.

1304431001 is a deficient number, since it is larger than the sum of its proper divisors (145099).

1304431001 is an equidigital number, since it uses as much as digits as its factorization.

1304431001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145098.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1304431001 is about 36116.9074119034. The cubic root of 1304431001 is about 1092.6314674041.

Adding to 1304431001 its reverse (1001344031), we get a palindrome (2305775032).

The spelling of 1304431001 in words is "one billion, three hundred four million, four hundred thirty-one thousand, one".

Divisors: 1 9629 135469 1304431001