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BaseRepresentation
bin1000111001001001001101
311101102211020
420321021031
51044044323
6121544353
725546353
oct10711115
94342736
102331213
111352525
129450b9
13638121
144497d3
15310ae3
hex23924d

2331213 has 4 divisors (see below), whose sum is σ = 3108288. Its totient is φ = 1554140.

The previous prime is 2331191. The next prime is 2331253. The reversal of 2331213 is 3121332.

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 2331213 - 28 = 2330957 is a prime.

It is a D-number.

2331213 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2331192 and 2331201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331253) 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, 388533 + ... + 388538.

It is an arithmetic number, because the mean of its divisors is an integer number (777072).

22331213 is an apocalyptic number.

It is an amenable number.

2331213 is a deficient number, since it is larger than the sum of its proper divisors (777075).

2331213 is an equidigital number, since it uses as much as digits as its factorization.

2331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777074.

The product of its digits is 108, while the sum is 15.

The square root of 2331213 is about 1526.8310319089. The cubic root of 2331213 is about 132.5950522417.

Adding to 2331213 its reverse (3121332), we get a palindrome (5452545).

The spelling of 2331213 in words is "two million, three hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 3 777071 2331213