1145312123 has 2 divisors, whose sum is σ = 1145312124. Its totient is φ = 1145312122.

The previous prime is 1145312101. The next prime is 1145312131. The reversal of 1145312123 is 3212135411.

It is a strong prime.

It is an emirp because it is prime and its reverse (3212135411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1145312123 - 2¹⁶ = 1145246587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1145312923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572656061 + 572656062.

It is an arithmetic number, because the mean of its divisors is an integer number (572656062).

Almost surely, 2^1145312123 is an apocalyptic number.

1145312123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145312123 is an equidigital number, since it uses as much as digits as its factorization.

1145312123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 1145312123 is about 33842.4603567767. The cubic root of 1145312123 is about 1046.2640086491.

Adding to 1145312123 its reverse (3212135411), we get a palindrome (4357447534).

The spelling of 1145312123 in words is "one billion, one hundred forty-five million, three hundred twelve thousand, one hundred twenty-three".