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211241203031 = 4340912011213
BaseRepresentation
bin1100010010111011110…
…1001111010101010111
3202012020202120222002102
43010232331033111113
511430110221444111
6241013132032315
721155516412455
oct3045675172527
9665222528072
10211241203031
1181650174441
1234b3430269b
1316bc61c90c1
14a31d01b9d5
1557652ab13b
hex312ef4f557

211241203031 has 8 divisors (see below), whose sum is σ = 216682300560. Its totient is φ = 205824128832.

The previous prime is 211241202923. The next prime is 211241203073. The reversal of 211241203031 is 130302142112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211241203031 - 226 = 211174094167 is a prime.

It is a super-2 number, since 2×2112412030312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211241202994 and 211241203012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211241283031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5988020 + ... + 6023193.

It is an arithmetic number, because the mean of its divisors is an integer number (27085287570).

Almost surely, 2211241203031 is an apocalyptic number.

211241203031 is a deficient number, since it is larger than the sum of its proper divisors (5441097529).

211241203031 is a wasteful number, since it uses less digits than its factorization.

211241203031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12011665.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 211241203031 its reverse (130302142112), we get a palindrome (341543345143).

The spelling of 211241203031 in words is "two hundred eleven billion, two hundred forty-one million, two hundred three thousand, thirty-one".

Divisors: 1 43 409 17587 12011213 516482159 4912586117 211241203031