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20200122031 = 711063267647
BaseRepresentation
bin10010110100000001…
…010110011010101111
31221010210002112001211
4102310001112122233
5312332212401111
613140234415251
71313402130025
oct226401263257
957123075054
1020200122031
118626495731
123ab8b91527
131b9bca563b
14d98ada715
157d35eb521
hex4b40566af

20200122031 has 8 divisors (see below), whose sum is σ = 20503977984. Its totient is φ = 19896803640.

The previous prime is 20200122017. The next prime is 20200122037. The reversal of 20200122031 is 13022100202.

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 20200122031 - 215 = 20200089263 is a prime.

It is a super-2 number, since 2×202001220312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200122037) 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 7 ways as a sum of consecutive naturals, for example, 58351 + ... + 209296.

It is an arithmetic number, because the mean of its divisors is an integer number (2562997248).

Almost surely, 220200122031 is an apocalyptic number.

20200122031 is a deficient number, since it is larger than the sum of its proper divisors (303855953).

20200122031 is a wasteful number, since it uses less digits than its factorization.

20200122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268781.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20200122031 its reverse (13022100202), we get a palindrome (33222222233).

The spelling of 20200122031 in words is "twenty billion, two hundred million, one hundred twenty-two thousand, thirty-one".

Divisors: 1 71 1063 75473 267647 19002937 284508761 20200122031