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231380654 = 2597326861
BaseRepresentation
bin11011100101010…
…01011010101110
3121010101100120212
431302221122232
5433213140104
634543142422
75506463111
oct1562513256
9533340525
10231380654
1110967678a
12655a4a12
1338c2383b
1422a30578
15154a736e
hexdca96ae

231380654 has 16 divisors (see below), whose sum is σ = 357801840. Its totient is φ = 112167360.

The previous prime is 231380627. The next prime is 231380663. The reversal of 231380654 is 456083132.

It is a self number, because there is not a number n which added to its sum of digits gives 231380654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4817 + ... + 22044.

It is an arithmetic number, because the mean of its divisors is an integer number (22362615).

Almost surely, 2231380654 is an apocalyptic number.

231380654 is a deficient number, since it is larger than the sum of its proper divisors (126421186).

231380654 is a wasteful number, since it uses less digits than its factorization.

231380654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26995.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 231380654 is about 15211.2015961922. The cubic root of 231380654 is about 613.9160884384.

The spelling of 231380654 in words is "two hundred thirty-one million, three hundred eighty thousand, six hundred fifty-four".

Divisors: 1 2 59 73 118 146 4307 8614 26861 53722 1584799 1960853 3169598 3921706 115690327 231380654