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13531202407 = 41330029327
BaseRepresentation
bin11001001101000010…
…11100001101100111
31021221000100022011201
430212201130031213
5210202441434112
610114404343331
7656213215462
oct144641341547
937830308151
1013531202407
115814013708
1227576a4b47
131378460158
149251242d9
15542dd0257
hex32685c367

13531202407 has 4 divisors (see below), whose sum is σ = 13861231776. Its totient is φ = 13201173040.

The previous prime is 13531202383. The next prime is 13531202449. The reversal of 13531202407 is 70420213531.

13531202407 is digitally balanced in base 2, 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: 70420213531 = 643109518217.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13531202407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531202467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165014623 + ... + 165014704.

It is an arithmetic number, because the mean of its divisors is an integer number (3465307944).

Almost surely, 213531202407 is an apocalyptic number.

13531202407 is a deficient number, since it is larger than the sum of its proper divisors (330029369).

13531202407 is an equidigital number, since it uses as much as digits as its factorization.

13531202407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330029368.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 13531202407 its reverse (70420213531), we get a palindrome (83951415938).

The spelling of 13531202407 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, four hundred seven".

Divisors: 1 41 330029327 13531202407