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201031102031 = 1723514146041
BaseRepresentation
bin1011101100111001100…
…0110010111001001111
3201012220012111002120112
42323032120302321033
511243202430231111
6232204042110235
720344511113244
oct2731630627117
9635805432515
10201031102031
11782908a8441
1232b64aab37b
1315c59b28b16
149a310075cb
155368c4ae8b
hex2ece632e4f

201031102031 has 8 divisors (see below), whose sum is σ = 222111090144. Its totient is φ = 180979406080.

The previous prime is 201031102007. The next prime is 201031102037. The reversal of 201031102031 is 130201130102.

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

It is a cyclic number.

It is not a de Polignac number, because 201031102031 - 222 = 201026907727 is a prime.

It is a super-2 number, since 2×2010311020312 (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 = 201031101997 and 201031102015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201031102037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257072630 + ... + 257073411.

It is an arithmetic number, because the mean of its divisors is an integer number (27763886268).

Almost surely, 2201031102031 is an apocalyptic number.

201031102031 is a deficient number, since it is larger than the sum of its proper divisors (21079988113).

201031102031 is a wasteful number, since it uses less digits than its factorization.

201031102031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514146081.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 201031102031 its reverse (130201130102), we get a palindrome (331232232133).

The spelling of 201031102031 in words is "two hundred one billion, thirty-one million, one hundred two thousand, thirty-one".

Divisors: 1 17 23 391 514146041 8740482697 11825358943 201031102031