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223231430 = 2522323143
BaseRepresentation
bin11010100111000…
…11110111000110
3120120001022221202
431103203313012
5424121401210
634052342502
75350302332
oct1523436706
9516038852
10223231430
11105010094
1262914a32
133732c506
142190c7c2
15148e79a5
hexd4e3dc6

223231430 has 8 divisors (see below), whose sum is σ = 401816592. Its totient is φ = 89292568.

The previous prime is 223231427. The next prime is 223231451. The reversal of 223231430 is 34132322.

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

It is a super-3 number, since 3×2232314303 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11161562 + ... + 11161581.

It is an arithmetic number, because the mean of its divisors is an integer number (50227074).

Almost surely, 2223231430 is an apocalyptic number.

223231430 is a deficient number, since it is larger than the sum of its proper divisors (178585162).

223231430 is a wasteful number, since it uses less digits than its factorization.

223231430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22323150.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 223231430 is about 14940.9313632049. The cubic root of 223231430 is about 606.6224058332.

Adding to 223231430 its reverse (34132322), we get a palindrome (257363752).

The spelling of 223231430 in words is "two hundred twenty-three million, two hundred thirty-one thousand, four hundred thirty".

Divisors: 1 2 5 10 22323143 44646286 111615715 223231430