1145661323 has 2 divisors, whose sum is σ = 1145661324. Its totient is φ = 1145661322.

The previous prime is 1145661271. The next prime is 1145661347. The reversal of 1145661323 is 3231665411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1145661323 - 2²⁰ = 1144612747 is a prime.

It is a super-2 number, since 2×1145661323² = 2625079734036220658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145661323.

It is not a weakly prime, because it can be changed into another prime (1145661353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572830661 + 572830662.

It is an arithmetic number, because the mean of its divisors is an integer number (572830662).

Almost surely, 2^1145661323 is an apocalyptic number.

1145661323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145661323 is an equidigital number, since it uses as much as digits as its factorization.

1145661323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 1145661323 is about 33847.6191629485. The cubic root of 1145661323 is about 1046.3703314173.

The spelling of 1145661323 in words is "one billion, one hundred forty-five million, six hundred sixty-one thousand, three hundred twenty-three".