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BaseRepresentation
bin111011110110111…
…011110000111001
32120222200111200021
4323312323300321
54024042200223
6243352410441
733613015654
oct7366736071
92528614607
101004256313
114759706a5
122403a6a21
1313009a608
149753889b
155d27265d
hex3bdbbc39

1004256313 has 4 divisors (see below), whose sum is σ = 1004347008. Its totient is φ = 1004165620.

The previous prime is 1004256307. The next prime is 1004256391. The reversal of 1004256313 is 3136524001.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3136524001 = 13241271077.

It is a cyclic number.

It is not a de Polignac number, because 1004256313 - 213 = 1004248121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004256413) 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, 25981 + ... + 51802.

It is an arithmetic number, because the mean of its divisors is an integer number (251086752).

Almost surely, 21004256313 is an apocalyptic number.

It is an amenable number.

1004256313 is a deficient number, since it is larger than the sum of its proper divisors (90695).

1004256313 is an equidigital number, since it uses as much as digits as its factorization.

1004256313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90694.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1004256313 is about 31690.0033606814. The cubic root of 1004256313 is about 1001.4167628352.

The spelling of 1004256313 in words is "one billion, four million, two hundred fifty-six thousand, three hundred thirteen".

Divisors: 1 12911 77783 1004256313