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1214230431 = 34350318713
BaseRepresentation
bin100100001011111…
…1010111110011111
310010121210022000110
41020113322332133
54441320333211
6320253101103
742042534261
oct11027727637
93117708013
101214230431
11573446327
1229a787793
1316473775b
14b7395b31
15718ebea6
hex485faf9f

1214230431 has 16 divisors (see below), whose sum is σ = 1660006656. Its totient is φ = 789047616.

The previous prime is 1214230417. The next prime is 1214230439. The reversal of 1214230431 is 1340324121.

It is not a de Polignac number, because 1214230431 - 213 = 1214222239 is a prime.

It is a super-2 number, since 2×12142304312 = 2948711079132891522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1214230398 and 1214230407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214230439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55531 + ... + 74243.

It is an arithmetic number, because the mean of its divisors is an integer number (103750416).

Almost surely, 21214230431 is an apocalyptic number.

1214230431 is a deficient number, since it is larger than the sum of its proper divisors (445776225).

1214230431 is a wasteful number, since it uses less digits than its factorization.

1214230431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19262.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1214230431 is about 34845.8093750167. The cubic root of 1214230431 is about 1066.8426536558.

Adding to 1214230431 its reverse (1340324121), we get a palindrome (2554554552).

The spelling of 1214230431 in words is "one billion, two hundred fourteen million, two hundred thirty thousand, four hundred thirty-one".

Divisors: 1 3 43 129 503 1509 18713 21629 56139 64887 804659 2413977 9412639 28237917 404743477 1214230431