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3129713 = 12792447
BaseRepresentation
bin1011111100000101110001
312220000011022
423330011301
51300122323
6151025225
735413346
oct13740561
95800138
103129713
111848444
12106b215
13857702
145b67cd
1541c4c8
hex2fc171

3129713 has 4 divisors (see below), whose sum is σ = 3133440. Its totient is φ = 3125988.

The previous prime is 3129701. The next prime is 3129733. The reversal of 3129713 is 3179213.

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.

It is a cyclic number.

It is not a de Polignac number, because 3129713 - 210 = 3128689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3129733) 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, 56 + ... + 2502.

It is an arithmetic number, because the mean of its divisors is an integer number (783360).

Almost surely, 23129713 is an apocalyptic number.

It is an amenable number.

3129713 is a deficient number, since it is larger than the sum of its proper divisors (3727).

3129713 is a wasteful number, since it uses less digits than its factorization.

3129713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726.

The product of its digits is 1134, while the sum is 26.

The square root of 3129713 is about 1769.0994884404. The cubic root of 3129713 is about 146.2743481025.

The spelling of 3129713 in words is "three million, one hundred twenty-nine thousand, seven hundred thirteen".

Divisors: 1 1279 2447 3129713