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231925057 = 7132548627
BaseRepresentation
bin11011101001011…
…10010101000001
3121011102000100221
431310232111001
5433333100212
635002543041
75514221230
oct1564562501
9534360327
10231925057
11109a08801
1265807a81
1339084580
1422b32b17
1515563807
hexdd2e541

231925057 has 8 divisors (see below), whose sum is σ = 285446336. Its totient is φ = 183501072.

The previous prime is 231925049. The next prime is 231925061. The reversal of 231925057 is 750529132.

231925057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 231925057 - 23 = 231925049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231925007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1274223 + ... + 1274404.

It is an arithmetic number, because the mean of its divisors is an integer number (35680792).

Almost surely, 2231925057 is an apocalyptic number.

It is an amenable number.

231925057 is a deficient number, since it is larger than the sum of its proper divisors (53521279).

231925057 is a wasteful number, since it uses less digits than its factorization.

231925057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548647.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 231925057 is about 15229.0858885227. The cubic root of 231925057 is about 614.3971946094.

The spelling of 231925057 in words is "two hundred thirty-one million, nine hundred twenty-five thousand, fifty-seven".

Divisors: 1 7 13 91 2548627 17840389 33132151 231925057