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1001213 = 23101431
BaseRepresentation
bin11110100011011111101
31212212101222
43310123331
5224014323
633243125
711336663
oct3643375
91785358
101001213
11624254
124034a5
13290945
141c0c33
1514b9c8
hexf46fd

1001213 has 8 divisors (see below), whose sum is σ = 1057536. Its totient is φ = 946000.

The previous prime is 1001197. The next prime is 1001219. The reversal of 1001213 is 3121001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1001213 - 24 = 1001197 is a prime.

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 1001213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2108 + ... + 2538.

It is an arithmetic number, because the mean of its divisors is an integer number (132192).

21001213 is an apocalyptic number.

It is an amenable number.

1001213 is a deficient number, since it is larger than the sum of its proper divisors (56323).

1001213 is a wasteful number, since it uses less digits than its factorization.

1001213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1001213 is about 1000.6063161903. The cubic root of 1001213 is about 100.0404169958.

Adding to 1001213 its reverse (3121001), we get a palindrome (4122214).

The spelling of 1001213 in words is "one million, one thousand, two hundred thirteen".

Divisors: 1 23 101 431 2323 9913 43531 1001213