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231149682 = 23243734091
BaseRepresentation
bin11011100011100…
…01000001110010
3121002221121202100
431301301001302
5433133242212
634534201230
75504511531
oct1561610162
9532847670
10231149682
111095291a5
12654b3216
1338b7267a
14229b0318
151545dbdc
hexdc71072

231149682 has 48 divisors (see below), whose sum is σ = 519618528. Its totient is φ = 74208960.

The previous prime is 231149657. The next prime is 231149707. The reversal of 231149682 is 286941132.

It is an interprime number because it is at equal distance from previous prime (231149657) and next prime (231149707).

It is a super-2 number, since 2×2311496822 = 106860350977402248, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 54457 + ... + 58547.

It is an arithmetic number, because the mean of its divisors is an integer number (10825386).

Almost surely, 2231149682 is an apocalyptic number.

231149682 is an abundant number, since it is smaller than the sum of its proper divisors (288468846).

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

231149682 is a wasteful number, since it uses less digits than its factorization.

231149682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215 (or 4212 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 231149682 is about 15203.6075324247. The cubic root of 231149682 is about 613.7117431560.

The spelling of 231149682 in words is "two hundred thirty-one million, one hundred forty-nine thousand, six hundred eighty-two".

Divisors: 1 2 3 6 9 18 43 73 86 129 146 219 258 387 438 657 774 1314 3139 4091 6278 8182 9417 12273 18834 24546 28251 36819 56502 73638 175913 298643 351826 527739 597286 895929 1055478 1583217 1791858 2687787 3166434 5375574 12841649 25683298 38524947 77049894 115574841 231149682