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231550253 = 1131679033
BaseRepresentation
bin11011100110100…
…10110100101101
3121010200222020022
431303102310231
5433234102003
634550531525
75511100424
oct1563226455
9533628208
10231550253
11109782150
1265666ba5
1338c82aac
1422a762bb
15154dc738
hexdcd2d2d

231550253 has 8 divisors (see below), whose sum is σ = 260749056. Its totient is φ = 203709600.

The previous prime is 231550219. The next prime is 231550271. The reversal of 231550253 is 352055132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-231550253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231550213) 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, 339176 + ... + 339857.

It is an arithmetic number, because the mean of its divisors is an integer number (32593632).

Almost surely, 2231550253 is an apocalyptic number.

It is an amenable number.

231550253 is a deficient number, since it is larger than the sum of its proper divisors (29198803).

231550253 is a wasteful number, since it uses less digits than its factorization.

231550253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679075.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 231550253 is about 15216.7753811378. The cubic root of 231550253 is about 614.0660492985.

The spelling of 231550253 in words is "two hundred thirty-one million, five hundred fifty thousand, two hundred fifty-three".

Divisors: 1 11 31 341 679033 7469363 21050023 231550253