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1030431020 = 22551521551
BaseRepresentation
bin111101011010110…
…010000100101100
32122210221022121212
4331122302010230
54102242243040
6250125413552
734351343033
oct7532620454
92583838555
101030431020
11489719093
1224910a2b8
131356333c8
149abcd71a
15606e2d65
hex3d6b212c

1030431020 has 12 divisors (see below), whose sum is σ = 2163905184. Its totient is φ = 412172400.

The previous prime is 1030431001. The next prime is 1030431037. The reversal of 1030431020 is 201340301.

1030431020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1030430986 and 1030431004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25760756 + ... + 25760795.

It is an arithmetic number, because the mean of its divisors is an integer number (180325432).

Almost surely, 21030431020 is an apocalyptic number.

1030431020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1030431020 is an abundant number, since it is smaller than the sum of its proper divisors (1133474164).

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

1030431020 is a wasteful number, since it uses less digits than its factorization.

1030431020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51521560 (or 51521558 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1030431020 is about 32100.3274126605. The cubic root of 1030431020 is about 1010.0424842437.

Adding to 1030431020 its reverse (201340301), we get a palindrome (1231771321).

The spelling of 1030431020 in words is "one billion, thirty million, four hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 51521551 103043102 206086204 257607755 515215510 1030431020