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13024031 = 18716961
BaseRepresentation
bin110001101011…
…101100011111
3220111200121112
4301223230133
511313232111
61143052235
7215462636
oct61535437
926450545
1013024031
117396169
12444107b
132910137
141a3051d
151223e8b
hexc6bb1f

13024031 has 4 divisors (see below), whose sum is σ = 13032864. Its totient is φ = 13015200.

The previous prime is 13024021. The next prime is 13024087. The reversal of 13024031 is 13042031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13042031 = 79165089.

It is a cyclic number.

It is not a de Polignac number, because 13024031 - 218 = 12761887 is a prime.

It is a super-2 number, since 2×130240312 = 339250766977922, 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 = 13023997 and 13024015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13024021) 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, 1610 + ... + 5351.

It is an arithmetic number, because the mean of its divisors is an integer number (3258216).

Almost surely, 213024031 is an apocalyptic number.

13024031 is a deficient number, since it is larger than the sum of its proper divisors (8833).

13024031 is an equidigital number, since it uses as much as digits as its factorization.

13024031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8832.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 13024031 is about 3608.8822369260. The cubic root of 13024031 is about 235.2782640090.

Adding to 13024031 its reverse (13042031), we get a palindrome (26066062).

The spelling of 13024031 in words is "thirteen million, twenty-four thousand, thirty-one".

Divisors: 1 1871 6961 13024031