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231250400 = 2552289063
BaseRepresentation
bin11011100100010…
…01100111100000
3121010010201220122
431302021213200
5433200003100
634540255412
75505411263
oct1562114740
9533121818
10231250400
11109597937
1265541568
1338ba9474
14229d8cda
151547d985
hexdc899e0

231250400 has 36 divisors (see below), whose sum is σ = 564541992. Its totient is φ = 92499840.

The previous prime is 231250381. The next prime is 231250457. The reversal of 231250400 is 4052132.

231250400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2312504003 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 143732 + ... + 145331.

It is an arithmetic number, because the mean of its divisors is an integer number (15681722).

Almost surely, 2231250400 is an apocalyptic number.

231250400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231250400 is an abundant number, since it is smaller than the sum of its proper divisors (333291592).

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

231250400 is a wasteful number, since it uses less digits than its factorization.

231250400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289083 (or 289070 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 231250400 is about 15206.9194776588. The cubic root of 231250400 is about 613.8008669989.

The spelling of 231250400 in words is "two hundred thirty-one million, two hundred fifty thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 289063 578126 1156252 1445315 2312504 2890630 4625008 5781260 7226575 9250016 11562520 14453150 23125040 28906300 46250080 57812600 115625200 231250400