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10011631231 = 71430233033
BaseRepresentation
bin10010101001011110…
…10101111001111111
3221211201122120011201
421110233111321333
5131000434144411
64333240000331
7503045314150
oct112457257177
927751576151
1010011631231
1142783397a8
121b34a600a7
13c37230664
146ad90d927
153d8e093c1
hex254bd5e7f

10011631231 has 4 divisors (see below), whose sum is σ = 11441864272. Its totient is φ = 8581398192.

The previous prime is 10011631213. The next prime is 10011631237. The reversal of 10011631231 is 13213611001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13213611001 = 109121225789.

It is a cyclic number.

It is not a de Polignac number, because 10011631231 - 27 = 10011631103 is a prime.

It is a super-2 number, since 2×100116312312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011631199 and 10011631208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011631237) 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, 715116510 + ... + 715116523.

It is an arithmetic number, because the mean of its divisors is an integer number (2860466068).

Almost surely, 210011631231 is an apocalyptic number.

10011631231 is a deficient number, since it is larger than the sum of its proper divisors (1430233041).

10011631231 is an equidigital number, since it uses as much as digits as its factorization.

10011631231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430233040.

The product of its (nonzero) digits is 108, while the sum is 19.

The spelling of 10011631231 in words is "ten billion, eleven million, six hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 7 1430233033 10011631231