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1353131493 = 371931109397
BaseRepresentation
bin101000010100111…
…0010010111100101
310111022011012110020
41100221302113211
510232400201433
6342134145353
745350266530
oct12051622745
93438135406
101353131493
1163489779a
123191b2259
1318744b82c
14cb9d1a17
157dbd7cb3
hex50a725e5

1353131493 has 32 divisors (see below), whose sum is σ = 2240471040. Its totient is φ = 708886080.

The previous prime is 1353131491. The next prime is 1353131509. The reversal of 1353131493 is 3941313531.

It is not a de Polignac number, because 1353131493 - 21 = 1353131491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1353131491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42330 + ... + 67067.

It is an arithmetic number, because the mean of its divisors is an integer number (70014720).

Almost surely, 21353131493 is an apocalyptic number.

It is an amenable number.

1353131493 is a deficient number, since it is larger than the sum of its proper divisors (887339547).

1353131493 is a wasteful number, since it uses less digits than its factorization.

1353131493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109457.

The product of its digits is 14580, while the sum is 33.

The square root of 1353131493 is about 36784.9356802482. The cubic root of 1353131493 is about 1106.0633466437.

The spelling of 1353131493 in words is "one billion, three hundred fifty-three million, one hundred thirty-one thousand, four hundred ninety-three".

Divisors: 1 3 7 19 21 31 57 93 133 217 399 589 651 1767 4123 12369 109397 328191 765779 2078543 2297337 3391307 6235629 10173921 14549801 23739149 43649403 64434833 71217447 193304499 451043831 1353131493