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231113103 = 3138117307
BaseRepresentation
bin11011100011010…
…00000110001111
3121002212202120120
431301220012033
5433131104403
634533320023
75504300064
oct1561500617
9532782516
10231113103
11109503771
1265496013
1338b5bb20
14229a0c6b
1515452e53
hexdc6818f

231113103 has 16 divisors (see below), whose sum is σ = 332309376. Its totient is φ = 142028640.

The previous prime is 231113101. The next prime is 231113107. The reversal of 231113103 is 301311132.

231113103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231113103 - 21 = 231113101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231113101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27976 + ... + 35282.

It is an arithmetic number, because the mean of its divisors is an integer number (20769336).

Almost surely, 2231113103 is an apocalyptic number.

231113103 is a deficient number, since it is larger than the sum of its proper divisors (101196273).

231113103 is a wasteful number, since it uses less digits than its factorization.

231113103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8134.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 231113103 is about 15202.4045137603. The cubic root of 231113103 is about 613.6793685406.

Adding to 231113103 its reverse (301311132), we get a palindrome (532424235).

The spelling of 231113103 in words is "two hundred thirty-one million, one hundred thirteen thousand, one hundred three".

Divisors: 1 3 13 39 811 2433 7307 10543 21921 31629 94991 284973 5925977 17777931 77037701 231113103