1123377481 has 2 divisors, whose sum is σ = 1123377482. Its totient is φ = 1123377480.

The previous prime is 1123377469. The next prime is 1123377511. The reversal of 1123377481 is 1847733211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1123322256 + 55225 = 33516^2 + 235^2 .

It is an emirp because it is prime and its reverse (1847733211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1123377481 - 2¹⁷ = 1123246409 is a prime.

It is a super-2 number, since 2×1123377481² = 2523953929635810722, 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 1123377481.

It is not a weakly prime, because it can be changed into another prime (1123377401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561688740 + 561688741.

It is an arithmetic number, because the mean of its divisors is an integer number (561688741).

Almost surely, 2^1123377481 is an apocalyptic number.

It is an amenable number.

1123377481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123377481 is an equidigital number, since it uses as much as digits as its factorization.

1123377481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 1123377481 is about 33516.8238501204. The cubic root of 1123377481 is about 1039.5416745877.

The spelling of 1123377481 in words is "one billion, one hundred twenty-three million, three hundred seventy-seven thousand, four hundred eighty-one".