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102031211 is a prime number
BaseRepresentation
bin1100001010011…
…01111101101011
321002222201111202
412011031331223
5202104444321
614042514415
72346152042
oct605157553
9232881452
10102031211
1152659617
122a205a0b
13181a51c9
14d79d559
158e5670b
hex614df6b

102031211 has 2 divisors, whose sum is σ = 102031212. Its totient is φ = 102031210.

The previous prime is 102031207. The next prime is 102031213. The reversal of 102031211 is 112130201.

It is a strong prime.

It is an emirp because it is prime and its reverse (112130201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102031211 - 22 = 102031207 is a prime.

It is a Sophie Germain prime.

Together with 102031213, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 102031192 and 102031201.

It is not a weakly prime, because it can be changed into another prime (102031213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51015605 + 51015606.

It is an arithmetic number, because the mean of its divisors is an integer number (51015606).

Almost surely, 2102031211 is an apocalyptic number.

102031211 is a deficient number, since it is larger than the sum of its proper divisors (1).

102031211 is an equidigital number, since it uses as much as digits as its factorization.

102031211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 102031211 is about 10101.0499949263. The cubic root of 102031211 is about 467.2805242017.

Adding to 102031211 its reverse (112130201), we get a palindrome (214161412).

The spelling of 102031211 in words is "one hundred two million, thirty-one thousand, two hundred eleven".