Search a number
-
+
13031473 = 713197537
BaseRepresentation
bin110001101101…
…100000110001
3220112001211011
4301231200301
511314001343
61143150521
7215523430
oct61554061
926461734
1013031473
1173a0814
124445441
132913640
141a33117
15122629d
hexc6d831

13031473 has 16 divisors (see below), whose sum is σ = 16885120. Its totient is φ = 9766656.

The previous prime is 13031467. The next prime is 13031479. The reversal of 13031473 is 37413031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13031467) and next prime (13031479).

It is a cyclic number.

It is not a de Polignac number, because 13031473 - 25 = 13031441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13031479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2040 + ... + 5497.

It is an arithmetic number, because the mean of its divisors is an integer number (1055320).

Almost surely, 213031473 is an apocalyptic number.

13031473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13031473 is a deficient number, since it is larger than the sum of its proper divisors (3853647).

13031473 is a wasteful number, since it uses less digits than its factorization.

13031473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7576.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 13031473 is about 3609.9131568502. The cubic root of 13031473 is about 235.3230685566.

The spelling of 13031473 in words is "thirteen million, thirty-one thousand, four hundred seventy-three".

Divisors: 1 7 13 19 91 133 247 1729 7537 52759 97981 143203 685867 1002421 1861639 13031473