1123020313 has 16 divisors (see below), whose sum is σ = 1161135360. Its totient is φ = 1085760000.

The previous prime is 1123020307. The next prime is 1123020317. The reversal of 1123020313 is 3130203211.

It is a cyclic number.

It is not a de Polignac number, because 1123020313 - 2⁹ = 1123019801 is a prime.

It is a super-2 number, since 2×1123020313² = 2522349246821235938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123020317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773238 + ... + 774688.

It is an arithmetic number, because the mean of its divisors is an integer number (72570960).

Almost surely, 2^1123020313 is an apocalyptic number.

It is an amenable number.

1123020313 is a deficient number, since it is larger than the sum of its proper divisors (38115047).

1123020313 is a wasteful number, since it uses less digits than its factorization.

1123020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1123020313 is about 33511.4952367094. The cubic root of 1123020313 is about 1039.4314918624.

Adding to 1123020313 its reverse (3130203211), we get a palindrome (4253223524).

The spelling of 1123020313 in words is "one billion, one hundred twenty-three million, twenty thousand, three hundred thirteen".