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1031303232020 = 225354714537683
BaseRepresentation
bin11110000000111100111…
…01100111101000010100
310122120222021222101002202
433000132131213220110
5113344102111411040
62105435115224032
7134336440556105
oct17003635475024
93576867871082
101031303232020
11368411874486
12147a59448018
137633665aa39
1437cb59b43ac
151bc5e9bd015
hexf01e767a14

1031303232020 has 24 divisors (see below), whose sum is σ = 2166347518944. Its totient is φ = 412404962976.

The previous prime is 1031303232013. The next prime is 1031303232049. The reversal of 1031303232020 is 202323031301.

1031303232020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1031303231983 and 1031303232001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7197902 + ... + 7339781.

It is an arithmetic number, because the mean of its divisors is an integer number (90264479956).

Almost surely, 21031303232020 is an apocalyptic number.

1031303232020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031303232020 is an abundant number, since it is smaller than the sum of its proper divisors (1135044286924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031303232020 is a wasteful number, since it uses less digits than its factorization.

1031303232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14541239 (or 14541237 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 1031303232020 its reverse (202323031301), we get a palindrome (1233626263321).

The spelling of 1031303232020 in words is "one trillion, thirty-one billion, three hundred three million, two hundred thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 3547 7094 14188 17735 35470 70940 14537683 29075366 58150732 72688415 145376830 290753660 51565161601 103130323202 206260646404 257825808005 515651616010 1031303232020