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1113423431 is a prime number
BaseRepresentation
bin100001001011101…
…0111111001000111
32212121002202210212
41002113113321013
54240014022211
6302252310035
736406641311
oct10227277107
92777082725
101113423431
1152155355a
12270a7231b
131498a0843
14a7c347b1
1567b3838b
hex425d7e47

1113423431 has 2 divisors, whose sum is σ = 1113423432. Its totient is φ = 1113423430.

The previous prime is 1113423413. The next prime is 1113423439. The reversal of 1113423431 is 1343243111.

Together with previous prime (1113423413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1113423431 - 210 = 1113422407 is a prime.

It is a super-2 number, since 2×11134234312 = 2479423473399623522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113423397 and 1113423406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113423439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556711715 + 556711716.

It is an arithmetic number, because the mean of its divisors is an integer number (556711716).

Almost surely, 21113423431 is an apocalyptic number.

1113423431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113423431 is an equidigital number, since it uses as much as digits as its factorization.

1113423431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 1113423431 is about 33368.0001048909. Note that the first 3 decimals coincide. The cubic root of 1113423431 is about 1036.4621623643.

Adding to 1113423431 its reverse (1343243111), we get a palindrome (2456666542).

The spelling of 1113423431 in words is "one billion, one hundred thirteen million, four hundred twenty-three thousand, four hundred thirty-one".