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1240311343 is a prime number
BaseRepresentation
bin100100111101101…
…1010011000101111
310012102212100022011
41021323122120233
510020004430333
6323024102051
742510321025
oct11173323057
93172770264
101240311343
1158713a2a7
122a7464927
13169c6994b
14baa24715
1573d4e9cd
hex49eda62f

1240311343 has 2 divisors, whose sum is σ = 1240311344. Its totient is φ = 1240311342.

The previous prime is 1240311311. The next prime is 1240311379. The reversal of 1240311343 is 3431130421.

It is a weak prime.

It is an emirp because it is prime and its reverse (3431130421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240311343 - 25 = 1240311311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240315343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620155671 + 620155672.

It is an arithmetic number, because the mean of its divisors is an integer number (620155672).

Almost surely, 21240311343 is an apocalyptic number.

1240311343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240311343 is an equidigital number, since it uses as much as digits as its factorization.

1240311343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1240311343 is about 35218.0542193915. The cubic root of 1240311343 is about 1074.4269794126.

Adding to 1240311343 its reverse (3431130421), we get a palindrome (4671441764).

The spelling of 1240311343 in words is "one billion, two hundred forty million, three hundred eleven thousand, three hundred forty-three".