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231056148 = 22334955171
BaseRepresentation
bin11011100010110…
…10001100010100
3121002202212110010
431301122030110
5433122244043
634532200220
75503642041
oct1561321424
9532685403
10231056148
111094749a4
1265469070
1338b3bc1b
14229881c8
1515441133
hexdc5a314

231056148 has 24 divisors (see below), whose sum is σ = 540685600. Its totient is φ = 76796640.

The previous prime is 231056143. The next prime is 231056159. The reversal of 231056148 is 841650132.

231056148 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231056141) 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 7 ways as a sum of consecutive naturals, for example, 23398 + ... + 31773.

Almost surely, 2231056148 is an apocalyptic number.

It is an amenable number.

231056148 is an abundant number, since it is smaller than the sum of its proper divisors (309629452).

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

231056148 is a wasteful number, since it uses less digits than its factorization.

231056148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55527 (or 55525 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 231056148 is about 15200.5311749294. The cubic root of 231056148 is about 613.6289531386.

The spelling of 231056148 in words is "two hundred thirty-one million, fifty-six thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 12 349 698 1047 1396 2094 4188 55171 110342 165513 220684 331026 662052 19254679 38509358 57764037 77018716 115528074 231056148