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1311032123 is a prime number
BaseRepresentation
bin100111000100100…
…1100001100111011
310101100221022222022
41032021030030323
510141111011443
6334031545055
744326406042
oct11611141473
93340838868
101311032123
11613052925
1230708b18b
1317b7cb56b
14c6193559
157a16de68
hex4e24c33b

1311032123 has 2 divisors, whose sum is σ = 1311032124. Its totient is φ = 1311032122.

The previous prime is 1311032089. The next prime is 1311032171. The reversal of 1311032123 is 3212301131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311032123 - 226 = 1243923259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311032183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655516061 + 655516062.

It is an arithmetic number, because the mean of its divisors is an integer number (655516062).

Almost surely, 21311032123 is an apocalyptic number.

1311032123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311032123 is an equidigital number, since it uses as much as digits as its factorization.

1311032123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1311032123 is about 36208.1775708196. The cubic root of 1311032123 is about 1094.4714679276.

Adding to 1311032123 its reverse (3212301131), we get a palindrome (4523333254).

The spelling of 1311032123 in words is "one billion, three hundred eleven million, thirty-two thousand, one hundred twenty-three".