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231361214 = 2719869779
BaseRepresentation
bin11011100101001…
…00101010111110
3121010100100220212
431302210222332
5433212024324
634542512422
75506352330
oct1562445276
9533310825
10231361214
11109663117
1265595712
1338c17a36
1422a27450
15154a170e
hexdca4abe

231361214 has 16 divisors (see below), whose sum is σ = 417494400. Its totient is φ = 93936024.

The previous prime is 231361201. The next prime is 231361223. The reversal of 231361214 is 412163132.

It is a super-2 number, since 2×2313612142 = 107056022687107592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231361214.

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, 434624 + ... + 435155.

It is an arithmetic number, because the mean of its divisors is an integer number (26093400).

Almost surely, 2231361214 is an apocalyptic number.

231361214 is a deficient number, since it is larger than the sum of its proper divisors (186133186).

231361214 is a wasteful number, since it uses less digits than its factorization.

231361214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869807.

The product of its digits is 864, while the sum is 23.

The square root of 231361214 is about 15210.5625799968. The cubic root of 231361214 is about 613.8988947465.

The spelling of 231361214 in words is "two hundred thirty-one million, three hundred sixty-one thousand, two hundred fourteen".

Divisors: 1 2 7 14 19 38 133 266 869779 1739558 6088453 12176906 16525801 33051602 115680607 231361214