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2130031 is a prime number
BaseRepresentation
bin1000001000000001101111
311000012212001
420020001233
51021130111
6113353131
724051001
oct10100157
94005761
102130031
111225362
128687a7
13597697
143d6371
152c11c1
hex20806f

2130031 has 2 divisors, whose sum is σ = 2130032. Its totient is φ = 2130030.

The previous prime is 2130013. The next prime is 2130047. The reversal of 2130031 is 1300312.

Together with previous prime (2130013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2130031 - 27 = 2129903 is a prime.

It is a super-2 number, since 2×21300312 = 9074064121922, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065015 + 1065016.

It is an arithmetic number, because the mean of its divisors is an integer number (1065016).

22130031 is an apocalyptic number.

2130031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130031 is an equidigital number, since it uses as much as digits as its factorization.

2130031 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 10.

The square root of 2130031 is about 1459.4625723190. The cubic root of 2130031 is about 128.6654593149.

Adding to 2130031 its reverse (1300312), we get a palindrome (3430343).

It can be divided in two parts, 2 and 130031, that multiplied together give a palindrome (260062).

The spelling of 2130031 in words is "two million, one hundred thirty thousand, thirty-one".