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231914 = 21719359
BaseRepresentation
bin111000100111101010
3102210010102
4320213222
524410124
64545402
71654064
oct704752
9383112
10231914
11149271
12b2262
1381737
1460734
1548aae
hex389ea

231914 has 16 divisors (see below), whose sum is σ = 388800. Its totient is φ = 103104.

The previous prime is 231901. The next prime is 231919. The reversal of 231914 is 419132.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231919) 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, 467 + ... + 825.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2231914 is an apocalyptic number.

231914 is a deficient number, since it is larger than the sum of its proper divisors (156886).

231914 is a wasteful number, since it uses less digits than its factorization.

231914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its digits is 216, while the sum is 20.

The square root of 231914 is about 481.5745009861. The cubic root of 231914 is about 61.4387430683.

The spelling of 231914 in words is "two hundred thirty-one thousand, nine hundred fourteen".

Divisors: 1 2 17 19 34 38 323 359 646 718 6103 6821 12206 13642 115957 231914