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631313138827 = 7127277708593
BaseRepresentation
bin10010010111111010011…
…00100000010010001011
32020100112022001022200201
421023331030200102023
540320412130420302
61202004331313031
763416346065650
oct11137514402213
92210468038621
10631313138827
11223813899228
12a24295ab777
13476c00aaa17
14227acc6dc27
151164ddcec87
hex92fd32048b

631313138827 has 8 divisors (see below), whose sum is σ = 721507417056. Its totient is φ = 541120532352.

The previous prime is 631313138803. The next prime is 631313138873. The reversal of 631313138827 is 728831313136.

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 631313138827 - 239 = 81557324939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631310138827) 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, 536643 + ... + 1245235.

It is an arithmetic number, because the mean of its divisors is an integer number (90188427132).

Almost surely, 2631313138827 is an apocalyptic number.

631313138827 is a deficient number, since it is larger than the sum of its proper divisors (90194278229).

631313138827 is a wasteful number, since it uses less digits than its factorization.

631313138827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835877.

The product of its digits is 435456, while the sum is 46.

The spelling of 631313138827 in words is "six hundred thirty-one billion, three hundred thirteen million, one hundred thirty-eight thousand, eight hundred twenty-seven".

Divisors: 1 7 127277 708593 890939 4960151 90187591261 631313138827