Search a number
-
+
13098031 = 67195493
BaseRepresentation
bin110001111101…
…110000101111
3220122110010021
4301331300233
511323114111
61144423011
7216221452
oct61756057
926573107
1013098031
117436821
124477a67
132937a1b
141a4d499
15123ad71
hexc7dc2f

13098031 has 4 divisors (see below), whose sum is σ = 13293592. Its totient is φ = 12902472.

The previous prime is 13098013. The next prime is 13098061. The reversal of 13098031 is 13089031.

13098031 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13089031 = 17769943.

It is a cyclic number.

It is not a de Polignac number, because 13098031 - 25 = 13097999 is a prime.

It is a super-2 number, since 2×130980312 = 343116832153922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13097987 and 13098005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13098061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97680 + ... + 97813.

It is an arithmetic number, because the mean of its divisors is an integer number (3323398).

Almost surely, 213098031 is an apocalyptic number.

13098031 is the 2090-th hex number.

13098031 is a deficient number, since it is larger than the sum of its proper divisors (195561).

13098031 is an equidigital number, since it uses as much as digits as its factorization.

13098031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195560.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 13098031 is about 3619.1201969540. The cubic root of 13098031 is about 235.7230244344.

The spelling of 13098031 in words is "thirteen million, ninety-eight thousand, thirty-one".

Divisors: 1 67 195493 13098031