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6331130261 = 16193910519
BaseRepresentation
bin1011110010101110…
…10110000110010101
3121100020010201222222
411321113112012111
5100431232132021
62524122032125
7312614501501
oct57127260625
917306121888
106331130261
112759837965
121288348645
1379b876131
14440ba7301
15270c456ab
hex1795d6195

6331130261 has 4 divisors (see below), whose sum is σ = 6335042400. Its totient is φ = 6327218124.

The previous prime is 6331130237. The next prime is 6331130263. The reversal of 6331130261 is 1620311336.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-6331130261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6331130261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6331130263) 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, 1953641 + ... + 1956878.

It is an arithmetic number, because the mean of its divisors is an integer number (1583760600).

Almost surely, 26331130261 is an apocalyptic number.

It is an amenable number.

6331130261 is a deficient number, since it is larger than the sum of its proper divisors (3912139).

6331130261 is a wasteful number, since it uses less digits than its factorization.

6331130261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3912138.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 6331130261 is about 79568.3998896547. The cubic root of 6331130261 is about 1849.9518137924.

Adding to 6331130261 its reverse (1620311336), we get a palindrome (7951441597).

The spelling of 6331130261 in words is "six billion, three hundred thirty-one million, one hundred thirty thousand, two hundred sixty-one".

Divisors: 1 1619 3910519 6331130261