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1313200405 = 51144353897
BaseRepresentation
bin100111001000101…
…1101100100010101
310101112000111022001
41032101131210111
510142134403110
6334150235301
744354006416
oct11621354425
93345014261
101313200405
116142a39a0
12307955b31
1317c0aa47a
14c659980d
157a44b63a
hex4e45d915

1313200405 has 16 divisors (see below), whose sum is σ = 1723011264. Its totient is φ = 952881280.

The previous prime is 1313200373. The next prime is 1313200477. The reversal of 1313200405 is 5040023131.

It is not a de Polignac number, because 1313200405 - 25 = 1313200373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2584 + ... + 51313.

It is an arithmetic number, because the mean of its divisors is an integer number (107688204).

Almost surely, 21313200405 is an apocalyptic number.

It is an amenable number.

1313200405 is a deficient number, since it is larger than the sum of its proper divisors (409810859).

1313200405 is a wasteful number, since it uses less digits than its factorization.

1313200405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54356.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1313200405 is about 36238.1070835661. The cubic root of 1313200405 is about 1095.0745082499.

Adding to 1313200405 its reverse (5040023131), we get a palindrome (6353223536).

The spelling of 1313200405 in words is "one billion, three hundred thirteen million, two hundred thousand, four hundred five".

Divisors: 1 5 11 55 443 2215 4873 24365 53897 269485 592867 2964335 23876371 119381855 262640081 1313200405