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20123027031 = 359911198123
BaseRepresentation
bin10010101111011011…
…010000011001010111
31220221102000200121110
4102233123100121113
5312202443331111
613124442150103
71311444623202
oct225733203127
956842020543
1020123027031
118596a19058
123a971b2333
131b890215b3
14d8c78c939
157cb96d5a6
hex4af6d0657

20123027031 has 8 divisors (see below), whose sum is σ = 26875497600. Its totient is φ = 13392953912.

The previous prime is 20123027021. The next prime is 20123027063. The reversal of 20123027031 is 13072032102.

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 20123027031 - 25 = 20123026999 is a prime.

It is a super-2 number, since 2×201230270312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20123026989 and 20123027007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123027021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5597265 + ... + 5600858.

It is an arithmetic number, because the mean of its divisors is an integer number (3359437200).

Almost surely, 220123027031 is an apocalyptic number.

20123027031 is a deficient number, since it is larger than the sum of its proper divisors (6752470569).

20123027031 is a wasteful number, since it uses less digits than its factorization.

20123027031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11198725.

The product of its (nonzero) digits is 504, while the sum is 21.

Adding to 20123027031 its reverse (13072032102), we get a palindrome (33195059133).

The spelling of 20123027031 in words is "twenty billion, one hundred twenty-three million, twenty-seven thousand, thirty-one".

Divisors: 1 3 599 1797 11198123 33594369 6707675677 20123027031