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31349544863 = 713344500493
BaseRepresentation
bin11101001100100101…
…000001011110011111
32222220210200212220012
4131030211001132133
51003200440413423
622222441313435
72156604506660
oct351445013637
988823625805
1031349544863
111232800106a
1260aaa9587b
132c57b59260
141735785367
15c37354078
hex74c94179f

31349544863 has 8 divisors (see below), whose sum is σ = 38584055328. Its totient is φ = 24804035424.

The previous prime is 31349544857. The next prime is 31349544887. The reversal of 31349544863 is 36844594313.

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

It is not a de Polignac number, because 31349544863 - 28 = 31349544607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31349546863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172250156 + ... + 172250337.

It is an arithmetic number, because the mean of its divisors is an integer number (4823006916).

Almost surely, 231349544863 is an apocalyptic number.

31349544863 is a deficient number, since it is larger than the sum of its proper divisors (7234510465).

31349544863 is a wasteful number, since it uses less digits than its factorization.

31349544863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344500513.

The product of its digits is 3732480, while the sum is 50.

The spelling of 31349544863 in words is "thirty-one billion, three hundred forty-nine million, five hundred forty-four thousand, eight hundred sixty-three".

Divisors: 1 7 13 91 344500493 2411503451 4478506409 31349544863