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BaseRepresentation
bin10010110100001001…
…10000011111011111
3222001222001122002112
421122010300133133
5131141342144411
64350154144235
7505213125122
oct113204603737
928058048075
1010101131231
114313909444
121b5aa2207b
13c4c938b39
146bb76a3b9
153e1bd7b8b
hex25a1307df

10101131231 has 2 divisors, whose sum is σ = 10101131232. Its totient is φ = 10101131230.

The previous prime is 10101131189. The next prime is 10101131263. The reversal of 10101131231 is 13213110101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10101131231 - 214 = 10101114847 is a prime.

It is a super-2 number, since 2×101011312312 (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101131531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050565615 + 5050565616.

It is an arithmetic number, because the mean of its divisors is an integer number (5050565616).

Almost surely, 210101131231 is an apocalyptic number.

10101131231 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101131231 is an equidigital number, since it uses as much as digits as its factorization.

10101131231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 10101131231 its reverse (13213110101), we get a palindrome (23314241332).

The spelling of 10101131231 in words is "ten billion, one hundred one million, one hundred thirty-one thousand, two hundred thirty-one".