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13031434 = 213501209
BaseRepresentation
bin110001101101…
…100000001010
3220112001202201
4301231200022
511314001214
61143150414
7215523343
oct61554012
926461681
1013031434
1173a0789
12444540a
132913610
141a330ca
151226274
hexc6d80a

13031434 has 8 divisors (see below), whose sum is σ = 21050820. Its totient is φ = 6014496.

The previous prime is 13031429. The next prime is 13031441. The reversal of 13031434 is 43413031.

It can be written as a sum of positive squares in 2 ways, for example, as 12938409 + 93025 = 3597^2 + 305^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250579 + ... + 250630.

Almost surely, 213031434 is an apocalyptic number.

13031434 is a deficient number, since it is larger than the sum of its proper divisors (8019386).

13031434 is a wasteful number, since it uses less digits than its factorization.

13031434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501224.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 13031434 is about 3609.9077550541. The cubic root of 13031434 is about 235.3228338016.

Adding to 13031434 its reverse (43413031), we get a palindrome (56444465).

The spelling of 13031434 in words is "thirteen million, thirty-one thousand, four hundred thirty-four".

Divisors: 1 2 13 26 501209 1002418 6515717 13031434