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1304203141 = 4727749003
BaseRepresentation
bin100110110111100…
…1000111110000101
310100220002101101001
41031233020332011
510132334000031
6333225333301
744214354343
oct11557107605
93326071331
101304203141
1160a20913a
12304937231
1317a27a147
14c52d6993
1579770861
hex4dbc8f85

1304203141 has 4 divisors (see below), whose sum is σ = 1331952192. Its totient is φ = 1276454092.

The previous prime is 1304203133. The next prime is 1304203207. The reversal of 1304203141 is 1413024031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1413024031 = 1797893989.

It is a cyclic number.

It is not a de Polignac number, because 1304203141 - 23 = 1304203133 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 (1304203541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13874455 + ... + 13874548.

It is an arithmetic number, because the mean of its divisors is an integer number (332988048).

Almost surely, 21304203141 is an apocalyptic number.

It is an amenable number.

1304203141 is a deficient number, since it is larger than the sum of its proper divisors (27749051).

1304203141 is an equidigital number, since it uses as much as digits as its factorization.

1304203141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27749050.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1304203141 is about 36113.7527958533. The cubic root of 1304203141 is about 1092.5678428546.

Adding to 1304203141 its reverse (1413024031), we get a palindrome (2717227172).

The spelling of 1304203141 in words is "one billion, three hundred four million, two hundred three thousand, one hundred forty-one".

Divisors: 1 47 27749003 1304203141