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1213430113 = 7237536833
BaseRepresentation
bin100100001010011…
…0111100101100001
310010120021122012001
41020110313211201
54441114230423
6320224004001
742032662060
oct11024674541
93116248161
101213430113
11572a4a005
1229a460601
131645173ac
14b72281d7
15717decad
hex48537961

1213430113 has 8 divisors (see below), whose sum is σ = 1447072128. Its totient is φ = 994861824.

The previous prime is 1213430077. The next prime is 1213430123. The reversal of 1213430113 is 3110343121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213430113 - 213 = 1213421921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213430123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3768256 + ... + 3768577.

It is an arithmetic number, because the mean of its divisors is an integer number (180884016).

Almost surely, 21213430113 is an apocalyptic number.

It is an amenable number.

1213430113 is a deficient number, since it is larger than the sum of its proper divisors (233642015).

1213430113 is an equidigital number, since it uses as much as digits as its factorization.

1213430113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7536863.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1213430113 is about 34834.3237769875. The cubic root of 1213430113 is about 1066.6082113257.

Adding to 1213430113 its reverse (3110343121), we get a palindrome (4323773234).

The spelling of 1213430113 in words is "one billion, two hundred thirteen million, four hundred thirty thousand, one hundred thirteen".

Divisors: 1 7 23 161 7536833 52757831 173347159 1213430113