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2020023031 = 13227114409
BaseRepresentation
bin111100001100111…
…0001101011110111
312012210000210122211
41320121301223313
513114111214111
6532240034251
7101025624655
oct17031615367
95183023584
102020023031
11947283224
12484602987
13262668100
141523cbdd5
15bc51a521
hex78671af7

2020023031 has 12 divisors (see below), whose sum is σ = 2188665360. Its totient is φ = 1863526080.

The previous prime is 2020023007. The next prime is 2020023037. The reversal of 2020023031 is 1303200202.

It is a happy number.

It is not a de Polignac number, because 2020023031 - 227 = 1885805303 is a prime.

It is a super-2 number, since 2×20200230312 = 8160986091540853922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020023037) 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 11 ways as a sum of consecutive naturals, for example, 455955 + ... + 460363.

It is an arithmetic number, because the mean of its divisors is an integer number (182388780).

Almost surely, 22020023031 is an apocalyptic number.

2020023031 is a deficient number, since it is larger than the sum of its proper divisors (168642329).

2020023031 is a wasteful number, since it uses less digits than its factorization.

2020023031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7146 (or 7133 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 2020023031 is about 44944.6663242703. Note that the first 3 decimals coincide. The cubic root of 2020023031 is about 1264.1116690769. Note that the first 3 decimals are identical.

Adding to 2020023031 its reverse (1303200202), we get a palindrome (3323223233).

The spelling of 2020023031 in words is "two billion, twenty million, twenty-three thousand, thirty-one".