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200312230031 = 1910542748949
BaseRepresentation
bin1011101010001110001…
…0100001000010001111
3201011001002210121120122
42322203202201002033
511240214412330111
6232004442135155
720320631601434
oct2724342410217
9634032717518
10200312230031
1177a52039251
12329a41b14bb
1315b73c0c884
1499a3759b8b
155325a9bcdb
hex2ea38a108f

200312230031 has 4 divisors (see below), whose sum is σ = 210854979000. Its totient is φ = 189769481064.

The previous prime is 200312230003. The next prime is 200312230051. The reversal of 200312230031 is 130032213002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200312230031 - 218 = 200311967887 is a prime.

It is a super-2 number, since 2×2003122300312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200312229991 and 200312230009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200312230051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5271374456 + ... + 5271374493.

It is an arithmetic number, because the mean of its divisors is an integer number (52713744750).

Almost surely, 2200312230031 is an apocalyptic number.

200312230031 is a deficient number, since it is larger than the sum of its proper divisors (10542748969).

200312230031 is a wasteful number, since it uses less digits than its factorization.

200312230031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10542748968.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 200312230031 its reverse (130032213002), we get a palindrome (330344443033).

The spelling of 200312230031 in words is "two hundred billion, three hundred twelve million, two hundred thirty thousand, thirty-one".

Divisors: 1 19 10542748949 200312230031