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993165031 = 16346113217
BaseRepresentation
bin111011001100100…
…111111011100111
32120012211000022001
4323030213323213
54013222240111
6242314550131
733416522605
oct7314477347
92505730261
10993165031
1146a685651
12238738347
1312a9b6121
1495c8c875
155c2d11c1
hex3b327ee7

993165031 has 8 divisors (see below), whose sum is σ = 1001501424. Its totient is φ = 984856320.

The previous prime is 993165029. The next prime is 993165049. The reversal of 993165031 is 130561399.

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 993165031 - 21 = 993165029 is a prime.

It is a super-2 number, since 2×9931650312 = 1972753557602461922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993165071) 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, 68535 + ... + 81751.

It is an arithmetic number, because the mean of its divisors is an integer number (125187678).

Almost surely, 2993165031 is an apocalyptic number.

993165031 is a deficient number, since it is larger than the sum of its proper divisors (8336393).

993165031 is a wasteful number, since it uses less digits than its factorization.

993165031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13841.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 993165031 is about 31514.5209546330. The cubic root of 993165031 is about 997.7164664437.

The spelling of 993165031 in words is "nine hundred ninety-three million, one hundred sixty-five thousand, thirty-one".

Divisors: 1 163 461 13217 75143 2154371 6093037 993165031