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67982816031 = 31319239383869
BaseRepresentation
bin111111010100000101…
…110111001100011111
320111110211122212200020
4333110011313030133
52103212100103111
651121511403223
74624451254554
oct772405671437
9214424585606
1067982816031
1126916588989
1211213383513
136545564880
14340cb66a2b
151b7d4a6906
hexfd417731f

67982816031 has 32 divisors (see below), whose sum is σ = 103184256000. Its totient is φ = 39467772288.

The previous prime is 67982816029. The next prime is 67982816063. The reversal of 67982816031 is 13061828976.

It is not a de Polignac number, because 67982816031 - 21 = 67982816029 is a prime.

It is a super-2 number, since 2×679828160312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67982816071) 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, 14836 + ... + 369033.

It is an arithmetic number, because the mean of its divisors is an integer number (3224508000).

Almost surely, 267982816031 is an apocalyptic number.

67982816031 is a deficient number, since it is larger than the sum of its proper divisors (35201439969).

67982816031 is a wasteful number, since it uses less digits than its factorization.

67982816031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384143.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 67982816031 in words is "sixty-seven billion, nine hundred eighty-two million, eight hundred sixteen thousand, thirty-one".

Divisors: 1 3 13 19 39 57 239 247 717 741 3107 4541 9321 13623 59033 177099 383869 1151607 4990297 7293511 14970891 21880533 91744691 94815643 275234073 284446929 1192680983 1743149129 3578042949 5229447387 22660938677 67982816031