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2123013 = 3707671
BaseRepresentation
bin1000000110010100000101
310222212020010
420012110011
51020414023
6113300433
724021354
oct10062405
93885203
102123013
111220062
12864719
13594429
143d399b
152be093
hex206505

2123013 has 4 divisors (see below), whose sum is σ = 2830688. Its totient is φ = 1415340.

The previous prime is 2122979. The next prime is 2123027. The reversal of 2123013 is 3103212.

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 not a de Polignac number, because 2123013 - 210 = 2121989 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2123013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353833 + ... + 353838.

It is an arithmetic number, because the mean of its divisors is an integer number (707672).

22123013 is an apocalyptic number.

It is an amenable number.

2123013 is a deficient number, since it is larger than the sum of its proper divisors (707675).

2123013 is an equidigital number, since it uses as much as digits as its factorization.

2123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707674.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2123013 is about 1457.0562789405. The cubic root of 2123013 is about 128.5239953776.

Adding to 2123013 its reverse (3103212), we get a palindrome (5226225).

The spelling of 2123013 in words is "two million, one hundred twenty-three thousand, thirteen".

Divisors: 1 3 707671 2123013