1172561323 has 2 divisors, whose sum is σ = 1172561324. Its totient is φ = 1172561322.

The previous prime is 1172561279. The next prime is 1172561333. The reversal of 1172561323 is 3231652711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1172561323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1172561333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586280661 + 586280662.

It is an arithmetic number, because the mean of its divisors is an integer number (586280662).

Almost surely, 2^1172561323 is an apocalyptic number.

1172561323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172561323 is an equidigital number, since it uses as much as digits as its factorization.

1172561323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 31.

The square root of 1172561323 is about 34242.6827658114. The cubic root of 1172561323 is about 1054.4966109221.

The spelling of 1172561323 in words is "one billion, one hundred seventy-two million, five hundred sixty-one thousand, three hundred twenty-three".