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5231313857 = 711293763317
BaseRepresentation
bin1001101111100111…
…11000001111000001
3111111120122021112002
410313303320033001
541203204020412
62223033113345
7243431301620
oct46763701701
914446567462
105231313857
112244a38590
12101bb58855
13654a5abb3
14378ab56b7
152093e8dc2
hex137cf83c1

5231313857 has 32 divisors (see below), whose sum is σ = 6929521920. Its totient is φ = 3829351680.

The previous prime is 5231313847. The next prime is 5231313907. The reversal of 5231313857 is 7583131325.

It is not a de Polignac number, because 5231313857 - 26 = 5231313793 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 5231313857.

It is not an unprimeable number, because it can be changed into a prime (5231313847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50963 + ... + 114279.

It is an arithmetic number, because the mean of its divisors is an integer number (216547560).

Almost surely, 25231313857 is an apocalyptic number.

It is an amenable number.

5231313857 is a deficient number, since it is larger than the sum of its proper divisors (1698208063).

5231313857 is a wasteful number, since it uses less digits than its factorization.

5231313857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63401.

The product of its digits is 75600, while the sum is 38.

The square root of 5231313857 is about 72327.8221502625. The cubic root of 5231313857 is about 1735.9488543167.

The spelling of 5231313857 in words is "five billion, two hundred thirty-one million, three hundred thirteen thousand, eight hundred fifty-seven".

Divisors: 1 7 11 29 37 77 203 259 319 407 1073 2233 2849 7511 11803 63317 82621 443219 696487 1836193 2342729 4875409 12853351 16399103 20198123 25770019 67939141 141386861 180390133 475573987 747330551 5231313857