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6512056031 = 13737986861
BaseRepresentation
bin1100001000010011…
…00001011011011111
3121210211120201111102
412010021201123133
5101314041243111
62554103543315
7320242364045
oct60411413337
917724521442
106512056031
112841982098
121318a5ab3b
137ca1b24c0
1445ac22395
15281a8313b
hex1842616df

6512056031 has 16 divisors (see below), whose sum is σ = 7199122560. Its totient is φ = 5853669120.

The previous prime is 6512056003. The next prime is 6512056087. The reversal of 6512056031 is 1306502156.

It is a de Polignac number, because none of the positive numbers 2k-6512056031 is a prime.

It is a super-3 number, since 3×65120560313 (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6512055985 and 6512056003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6512056531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31541 + ... + 118401.

It is an arithmetic number, because the mean of its divisors is an integer number (449945160).

Almost surely, 26512056031 is an apocalyptic number.

6512056031 is a deficient number, since it is larger than the sum of its proper divisors (687066529).

6512056031 is a wasteful number, since it uses less digits than its factorization.

6512056031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87026.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 6512056031 is about 80697.3111757759. The cubic root of 6512056031 is about 1867.4086932211.

Adding to 6512056031 its reverse (1306502156), we get a palindrome (7818558187).

The spelling of 6512056031 in words is "six billion, five hundred twelve million, fifty-six thousand, thirty-one".

Divisors: 1 13 73 79 949 1027 5767 74971 86861 1129193 6340853 6862019 82431089 89206247 500927387 6512056031