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210213031231 = 7191580549107
BaseRepresentation
bin1100001111000110101…
…1000100110100111111
3202002121002220102112101
43003301223010310333
511421004013444411
6240323122445531
721121163166160
oct3036153046477
9662532812471
10210213031231
1181172859785
12348a7b038a7
1316a911a7118
14a262659767
155704db28c1
hex30f1ac4d3f

210213031231 has 8 divisors (see below), whose sum is σ = 252887857280. Its totient is φ = 170699303448.

The previous prime is 210213031211. The next prime is 210213031267. The reversal of 210213031231 is 132130312012.

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 210213031231 - 27 = 210213031103 is a prime.

It is a super-2 number, since 2×2102130312312 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210213031199 and 210213031208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210213031211) 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, 790274421 + ... + 790274686.

It is an arithmetic number, because the mean of its divisors is an integer number (31610982160).

Almost surely, 2210213031231 is an apocalyptic number.

210213031231 is a deficient number, since it is larger than the sum of its proper divisors (42674826049).

210213031231 is a wasteful number, since it uses less digits than its factorization.

210213031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580549133.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 210213031231 its reverse (132130312012), we get a palindrome (342343343243).

The spelling of 210213031231 in words is "two hundred ten billion, two hundred thirteen million, thirty-one thousand, two hundred thirty-one".

Divisors: 1 7 19 133 1580549107 11063843749 30030433033 210213031231