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200030001031 = 724567893857
BaseRepresentation
bin1011101001001010110…
…1111001011110000111
3201010022102201220011201
42322102231321132013
511234130140013111
6231520441043331
720310633645400
oct2722255713607
9633272656151
10200030001031
11779177a2443
1232925786547
1315b2a5c4773
1499780909a7
15530aded6c1
hex2e92b79787

200030001031 has 12 divisors (see below), whose sum is σ = 232739170608. Its totient is φ = 171416552832.

The previous prime is 200030001007. The next prime is 200030001053. The reversal of 200030001031 is 130100030002.

It is a de Polignac number, because none of the positive numbers 2k-200030001031 is a prime.

It is a super-2 number, since 2×2000300010312 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200030000999 and 200030001017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200030001091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223146 + ... + 670711.

It is an arithmetic number, because the mean of its divisors is an integer number (19394930884).

Almost surely, 2200030001031 is an apocalyptic number.

200030001031 is a deficient number, since it is larger than the sum of its proper divisors (32709169577).

200030001031 is an equidigital number, since it uses as much as digits as its factorization.

200030001031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898438 (or 898431 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 200030001031 its reverse (130100030002), we get a palindrome (330130031033).

The spelling of 200030001031 in words is "two hundred billion, thirty million, one thousand, thirty-one".

Divisors: 1 7 49 4567 31969 223783 893857 6256999 43798993 4082244919 28575714433 200030001031