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213410031 = 32323912941
BaseRepresentation
bin11001011100001…
…10000011101111
3112212120100112020
430232012003233
5414113110111
633102041223
75200645452
oct1456060357
9485510466
10213410031
11aa51212a
125b579213
13352a1033
14204b3499
1513b07906
hexcb860ef

213410031 has 16 divisors (see below), whose sum is σ = 298183680. Its totient is φ = 135507680.

The previous prime is 213410011. The next prime is 213410069. The reversal of 213410031 is 130014312.

It is a cyclic number.

It is not a de Polignac number, because 213410031 - 214 = 213393647 is a prime.

It is a super-2 number, since 2×2134100312 = 91087682662841922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213410011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10021 + ... + 22961.

It is an arithmetic number, because the mean of its divisors is an integer number (18636480).

Almost surely, 2213410031 is an apocalyptic number.

213410031 is a deficient number, since it is larger than the sum of its proper divisors (84773649).

213410031 is a wasteful number, since it uses less digits than its factorization.

213410031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13206.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 213410031 is about 14608.5601959947. The cubic root of 213410031 is about 597.5922312295.

Adding to 213410031 its reverse (130014312), we get a palindrome (343424343).

The spelling of 213410031 in words is "two hundred thirteen million, four hundred ten thousand, thirty-one".

Divisors: 1 3 23 69 239 717 5497 12941 16491 38823 297643 892929 3092899 9278697 71136677 213410031