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231061457 = 1147943853
BaseRepresentation
bin11011100010110…
…11011111010001
3121002210010201202
431301123133101
5433122431312
634532240545
75503663364
oct1561333721
9532703652
10231061457
11109478990
1265470155
1338b41473
142298a0db
15154429c2
hexdc5b7d1

231061457 has 8 divisors (see below), whose sum is σ = 252599040. Its totient is φ = 209612560.

The previous prime is 231061429. The next prime is 231061463. The reversal of 231061457 is 754160132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231061457 - 210 = 231060433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231061057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16658 + ... + 27195.

It is an arithmetic number, because the mean of its divisors is an integer number (31574880).

Almost surely, 2231061457 is an apocalyptic number.

It is an amenable number.

231061457 is a deficient number, since it is larger than the sum of its proper divisors (21537583).

231061457 is a wasteful number, since it uses less digits than its factorization.

231061457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44343.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 231061457 is about 15200.7058059815. The cubic root of 231061457 is about 613.6336529070.

The spelling of 231061457 in words is "two hundred thirty-one million, sixty-one thousand, four hundred fifty-seven".

Divisors: 1 11 479 5269 43853 482383 21005587 231061457