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232131234 = 23711633343
BaseRepresentation
bin11011101011000…
…00101010100010
3121011210111012010
431311200222202
5433411144414
635011213350
75516040306
oct1565405242
9534714163
10232131234
1110a0396a5
12658a7256
133912737a
1422b87d06
15155a4959
hexdd60aa2

232131234 has 32 divisors (see below), whose sum is σ = 473831424. Its totient is φ = 75796560.

The previous prime is 232131199. The next prime is 232131239. The reversal of 232131234 is 432131232.

It is a self number, because there is not a number n which added to its sum of digits gives 232131234.

It is not an unprimeable number, because it can be changed into a prime (232131239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67767 + ... + 71109.

It is an arithmetic number, because the mean of its divisors is an integer number (14807232).

Almost surely, 2232131234 is an apocalyptic number.

232131234 is an abundant number, since it is smaller than the sum of its proper divisors (241700190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

232131234 is a wasteful number, since it uses less digits than its factorization.

232131234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3582.

The product of its digits is 864, while the sum is 21.

The square root of 232131234 is about 15235.8535697873. The cubic root of 232131234 is about 614.5792031907.

Adding to 232131234 its reverse (432131232), we get a palindrome (664262466).

The spelling of 232131234 in words is "two hundred thirty-two million, one hundred thirty-one thousand, two hundred thirty-four".

Divisors: 1 2 3 6 71 142 163 213 326 426 489 978 3343 6686 10029 11573 20058 23146 34719 69438 237353 474706 544909 712059 1089818 1424118 1634727 3269454 38688539 77377078 116065617 232131234