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211023001 = 71035412
BaseRepresentation
bin11001001001111…
…11010010011001
3112201002002010201
430210333102121
5413010214001
632534542201
75141444260
oct1444772231
9481062121
10211023001
11a9131782
125a807961
13349466a7
14200515d7
15137d5501
hexc93f499

211023001 has 12 divisors (see below), whose sum is σ = 243961536. Its totient is φ = 178789680.

The previous prime is 211022993. The next prime is 211023049. The reversal of 211023001 is 100320112.

Adding to 211023001 its reverse (100320112), we get a palindrome (311343113).

It is not a de Polignac number, because 211023001 - 23 = 211022993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389791 + ... + 390331.

It is an arithmetic number, because the mean of its divisors is an integer number (20330128).

Almost surely, 2211023001 is an apocalyptic number.

It is an amenable number.

211023001 is a deficient number, since it is larger than the sum of its proper divisors (32938535).

211023001 is an frugal number, since it uses more digits than its factorization.

211023001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 211023001 is about 14526.6307518296. The cubic root of 211023001 is about 595.3558128842.

The spelling of 211023001 in words is "two hundred eleven million, twenty-three thousand, one".

Divisors: 1 7 103 541 721 3787 55723 292681 390061 2048767 30146143 211023001