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13394031 = 371933569
BaseRepresentation
bin110011000110…
…000001101111
3221012111011020
4303012001233
511412102111
61155025223
7221563440
oct63060157
927174136
1013394031
117619152
12459b213
132a0c681
141ac92c7
151298906
hexcc606f

13394031 has 16 divisors (see below), whose sum is σ = 21484800. Its totient is φ = 7250688.

The previous prime is 13394023. The next prime is 13394041. The reversal of 13394031 is 13049331.

13394031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13394031 - 23 = 13394023 is a prime.

It is a super-2 number, since 2×133940312 = 358800132857922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13393992 and 13394010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13394041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16386 + ... + 17183.

It is an arithmetic number, because the mean of its divisors is an integer number (1342800).

Almost surely, 213394031 is an apocalyptic number.

13394031 is a deficient number, since it is larger than the sum of its proper divisors (8090769).

13394031 is a wasteful number, since it uses less digits than its factorization.

13394031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33598.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 13394031 is about 3659.7856494609. The cubic root of 13394031 is about 237.4855008692.

The spelling of 13394031 in words is "thirteen million, three hundred ninety-four thousand, thirty-one".

Divisors: 1 3 7 19 21 57 133 399 33569 100707 234983 637811 704949 1913433 4464677 13394031