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1010212231 = 7144316033
BaseRepresentation
bin111100001101101…
…001110110000111
32121101220002122211
4330031221312013
54032103242411
6244124204251
734014443110
oct7415516607
92541802584
101010212231
11479269446
12242399687
131313a4522
1498249207
155da4c221
hex3c369d87

1010212231 has 4 divisors (see below), whose sum is σ = 1154528272. Its totient is φ = 865896192.

The previous prime is 1010212207. The next prime is 1010212237. The reversal of 1010212231 is 1322120101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1322120101 = 12291075769.

It is a de Polignac number, because none of the positive numbers 2k-1010212231 is a prime.

It is a super-3 number, since 3×10102122313 (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010212237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72158010 + ... + 72158023.

It is an arithmetic number, because the mean of its divisors is an integer number (288632068).

Almost surely, 21010212231 is an apocalyptic number.

1010212231 is a deficient number, since it is larger than the sum of its proper divisors (144316041).

1010212231 is an equidigital number, since it uses as much as digits as its factorization.

1010212231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144316040.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1010212231 is about 31783.8360019680. The cubic root of 1010212231 is about 1003.3925545581.

Adding to 1010212231 its reverse (1322120101), we get a palindrome (2332332332).

The spelling of 1010212231 in words is "one billion, ten million, two hundred twelve thousand, two hundred thirty-one".

Divisors: 1 7 144316033 1010212231