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20300031042 = 233383338507
BaseRepresentation
bin10010111001111110…
…011110010001000010
31221101202002102110120
4102321332132101002
5313033301443132
613154204041110
71316024262654
oct227176362102
957352072416
1020300031042
118677924865
123b26533196
131bb68b68b5
14da80a66d4
157dc28402c
hex4b9f9e442

20300031042 has 8 divisors (see below), whose sum is σ = 40600062096. Its totient is φ = 6766677012.

The previous prime is 20300030999. The next prime is 20300031043. The reversal of 20300031042 is 24013000302.

It is a sphenic number, since it is the product of 3 distinct primes.

20300031042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20300031043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691669248 + ... + 1691669259.

It is an arithmetic number, because the mean of its divisors is an integer number (5075007762).

Almost surely, 220300031042 is an apocalyptic number.

20300031042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20300031042 is a wasteful number, since it uses less digits than its factorization.

20300031042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383338512.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20300031042 its reverse (24013000302), we get a palindrome (44313031344).

The spelling of 20300031042 in words is "twenty billion, three hundred million, thirty-one thousand, forty-two".

Divisors: 1 2 3 6 3383338507 6766677014 10150015521 20300031042