1534120223 has 2 divisors, whose sum is σ = 1534120224. Its totient is φ = 1534120222.

The previous prime is 1534120187. The next prime is 1534120261. The reversal of 1534120223 is 3220214351.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1534120223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534120823) 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, 767060111 + 767060112.

It is an arithmetic number, because the mean of its divisors is an integer number (767060112).

Almost surely, 2^1534120223 is an apocalyptic number.

1534120223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534120223 is an equidigital number, since it uses as much as digits as its factorization.

1534120223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1534120223 is about 39167.8468006604. The cubic root of 1534120223 is about 1153.3287857101.

Adding to 1534120223 its reverse (3220214351), we get a palindrome (4754334574).

The spelling of 1534120223 in words is "one billion, five hundred thirty-four million, one hundred twenty thousand, two hundred twenty-three".