1123687297 has 2 divisors, whose sum is σ = 1123687298. Its totient is φ = 1123687296.

The previous prime is 1123687261. The next prime is 1123687307. The reversal of 1123687297 is 7927863211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1006094961 + 117592336 = 31719^2 + 10844^2 .

It is an emirp because it is prime and its reverse (7927863211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123687297 - 2¹⁵ = 1123654529 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123687207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561843648 + 561843649.

It is an arithmetic number, because the mean of its divisors is an integer number (561843649).

Almost surely, 2^1123687297 is an apocalyptic number.

It is an amenable number.

1123687297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123687297 is an equidigital number, since it uses as much as digits as its factorization.

1123687297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 1123687297 is about 33521.4453298183. The cubic root of 1123687297 is about 1039.6372307850.

The spelling of 1123687297 in words is "one billion, one hundred twenty-three million, six hundred eighty-seven thousand, two hundred ninety-seven".