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344011213 = 72135091061
BaseRepresentation
bin10100100000010…
…011000111001101
3212222022120200001
4110200103013031
51201031324323
654045204301
711345022100
oct2440230715
9788276601
10344011213
11167204797
1297260691
135636a340
143398c737
15203043ad
hex148131cd

344011213 has 24 divisors (see below), whose sum is σ = 432212760. Its totient is φ = 271393920.

The previous prime is 344011193. The next prime is 344011231. The reversal of 344011213 is 312110443.

It can be written as a sum of positive squares in 4 ways, for example, as 64352484 + 279658729 = 8022^2 + 16723^2 .

It is not a de Polignac number, because 344011213 - 213 = 344003021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344012213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323703 + ... + 324763.

It is an arithmetic number, because the mean of its divisors is an integer number (18008865).

Almost surely, 2344011213 is an apocalyptic number.

It is an amenable number.

344011213 is a deficient number, since it is larger than the sum of its proper divisors (88201547).

344011213 is a wasteful number, since it uses less digits than its factorization.

344011213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1590 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 344011213 is about 18547.5392707496. The cubic root of 344011213 is about 700.6872250959.

Adding to 344011213 its reverse (312110443), we get a palindrome (656121656).

The spelling of 344011213 in words is "three hundred forty-four million, eleven thousand, two hundred thirteen".

Divisors: 1 7 13 49 91 509 637 1061 3563 6617 7427 13793 24941 46319 51989 96551 324233 540049 675857 3780343 7020637 26462401 49144459 344011213