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201012303231 = 3271931063561
BaseRepresentation
bin1011101100110101000…
…1000101010101111111
3201012211220010000110200
42323031101011111333
511243133122200411
6232202131134543
720344162246245
oct2731521052577
9635756100420
10201012303231
1178281228643
1232b5a744453
1315c55c7637c
149a2c712795
155367285e56
hex2ecd44557f

201012303231 has 12 divisors (see below), whose sum is σ = 290754940320. Its totient is φ = 133821816480.

The previous prime is 201012303209. The next prime is 201012303241. The reversal of 201012303231 is 132303210102.

201012303231 is a `hidden beast` number, since 201 + 0 + 1 + 230 + 3 + 231 = 666.

It is not a de Polignac number, because 201012303231 - 211 = 201012301183 is a prime.

It is a super-2 number, since 2×2010123032312 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012303241) 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, 15525310 + ... + 15538251.

It is an arithmetic number, because the mean of its divisors is an integer number (24229578360).

Almost surely, 2201012303231 is an apocalyptic number.

201012303231 is a deficient number, since it is larger than the sum of its proper divisors (89742637089).

201012303231 is a wasteful number, since it uses less digits than its factorization.

201012303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31064286 (or 31064283 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 201012303231 its reverse (132303210102), we get a palindrome (333315513333).

The spelling of 201012303231 in words is "two hundred one billion, twelve million, three hundred three thousand, two hundred thirty-one".

Divisors: 1 3 9 719 2157 6471 31063561 93190683 279572049 22334700359 67004101077 201012303231