1345253123 has 2 divisors, whose sum is σ = 1345253124. Its totient is φ = 1345253122.

The previous prime is 1345253101. The next prime is 1345253137. The reversal of 1345253123 is 3213525431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1345253123 - 2⁶ = 1345253059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345253183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672626561 + 672626562.

It is an arithmetic number, because the mean of its divisors is an integer number (672626562).

Almost surely, 2^1345253123 is an apocalyptic number.

1345253123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345253123 is an equidigital number, since it uses as much as digits as its factorization.

1345253123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 29.

The square root of 1345253123 is about 36677.6924437730. The cubic root of 1345253123 is about 1103.9125472783.

Adding to 1345253123 its reverse (3213525431), we get a palindrome (4558778554).

The spelling of 1345253123 in words is "one billion, three hundred forty-five million, two hundred fifty-three thousand, one hundred twenty-three".