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231214810 = 2523121481
BaseRepresentation
bin11011100100000…
…00111011011010
3121010001221002111
431302000323122
5433142333220
634535422534
75505202441
oct1562007332
9533057074
10231214810
11109573122
1265524a4a
1338b961c8
14229c9d58
151547315a
hexdc80eda

231214810 has 8 divisors (see below), whose sum is σ = 416186676. Its totient is φ = 92485920.

The previous prime is 231214801. The next prime is 231214811. The reversal of 231214810 is 18412132.

It is a happy number.

231214810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 231009601 + 205209 = 15199^2 + 453^2 .

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

It is a super-2 number, since 2×2312148102 = 106920576726672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231214811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11560731 + ... + 11560750.

Almost surely, 2231214810 is an apocalyptic number.

231214810 is a deficient number, since it is larger than the sum of its proper divisors (184971866).

231214810 is a wasteful number, since it uses less digits than its factorization.

231214810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23121488.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 231214810 is about 15205.7492416520. The cubic root of 231214810 is about 613.7693769004.

Adding to 231214810 its reverse (18412132), we get a palindrome (249626942).

The spelling of 231214810 in words is "two hundred thirty-one million, two hundred fourteen thousand, eight hundred ten".

Divisors: 1 2 5 10 23121481 46242962 115607405 231214810