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3125013 = 31041671
BaseRepresentation
bin1011111010111100010101
312212202201020
423322330111
51300000023
6150551353
735363553
oct13727425
95782636
103125013
111844961
121068559
13855528
145b4bd3
1541ade3
hex2faf15

3125013 has 4 divisors (see below), whose sum is σ = 4166688. Its totient is φ = 2083340.

The previous prime is 3125009. The next prime is 3125021. The reversal of 3125013 is 3105213.

It is a happy number.

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 3125013 - 22 = 3125009 is a prime.

It is an Ulam number.

It is a D-number.

3125013 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3124983 and 3125001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125113) 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, 520833 + ... + 520838.

It is an arithmetic number, because the mean of its divisors is an integer number (1041672).

Almost surely, 23125013 is an apocalyptic number.

It is an amenable number.

3125013 is a deficient number, since it is larger than the sum of its proper divisors (1041675).

3125013 is a wasteful number, since it uses less digits than its factorization.

3125013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041674.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 3125013 is about 1767.7706299178. The cubic root of 3125013 is about 146.2010896423.

The spelling of 3125013 in words is "three million, one hundred twenty-five thousand, thirteen".

Divisors: 1 3 1041671 3125013