Search a number
-
+
1311413041 = 1969021739
BaseRepresentation
bin100111000101010…
…1001001100110001
310101101122200111101
41032022221030301
510141210204131
6334044044401
744332553431
oct11612511461
93341580441
101311413041
11613293034
12307233701
1317b902a63
14c62522c1
157a1e6c61
hex4e2a9331

1311413041 has 4 divisors (see below), whose sum is σ = 1380434800. Its totient is φ = 1242391284.

The previous prime is 1311413039. The next prime is 1311413069. The reversal of 1311413041 is 1403141131.

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.

It is a cyclic number.

It is not a de Polignac number, because 1311413041 - 21 = 1311413039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 69021739 = 1311413041 / (1 + 3 + 1 + 1 + 4 + 1 + 3 + 0 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311413021) 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, 34510851 + ... + 34510888.

It is an arithmetic number, because the mean of its divisors is an integer number (345108700).

Almost surely, 21311413041 is an apocalyptic number.

It is an amenable number.

1311413041 is a deficient number, since it is larger than the sum of its proper divisors (69021759).

1311413041 is an equidigital number, since it uses as much as digits as its factorization.

1311413041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69021758.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1311413041 is about 36213.4372988812. The cubic root of 1311413041 is about 1094.5774565617.

Adding to 1311413041 its reverse (1403141131), we get a palindrome (2714554172).

The spelling of 1311413041 in words is "one billion, three hundred eleven million, four hundred thirteen thousand, forty-one".

Divisors: 1 19 69021739 1311413041