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10013012231 = 73211367711
BaseRepresentation
bin10010101001101001…
…00111000100000111
3221211211020201112212
421110310213010013
5131001312342411
64333325334035
7503063125325
oct112464470407
927754221485
1010013012231
1142790a2322
121b3540731b
13c375c5111
146adb8cd15
153d90cd68b
hex254d27107

10013012231 has 4 divisors (see below), whose sum is σ = 10014387264. Its totient is φ = 10011637200.

The previous prime is 10013012213. The next prime is 10013012239. The reversal of 10013012231 is 13221031001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13221031001 = 31426484871.

It is a cyclic number.

It is not a de Polignac number, because 10013012231 - 26 = 10013012167 is a prime.

It is a super-2 number, since 2×100130122312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10013012239) 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, 676535 + ... + 691176.

It is an arithmetic number, because the mean of its divisors is an integer number (2503596816).

Almost surely, 210013012231 is an apocalyptic number.

10013012231 is a deficient number, since it is larger than the sum of its proper divisors (1375033).

10013012231 is an equidigital number, since it uses as much as digits as its factorization.

10013012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375032.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 10013012231 its reverse (13221031001), we get a palindrome (23234043232).

The spelling of 10013012231 in words is "ten billion, thirteen million, twelve thousand, two hundred thirty-one".

Divisors: 1 7321 1367711 10013012231