1123100513 has 2 divisors, whose sum is σ = 1123100514. Its totient is φ = 1123100512.

The previous prime is 1123100509. The next prime is 1123100521. The reversal of 1123100513 is 3150013211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1121379169 + 1721344 = 33487^2 + 1312^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123100513 - 2² = 1123100509 is a prime.

It is a super-2 number, since 2×1123100513² = 2522709524601726338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123100491 and 1123100500.

It is not a weakly prime, because it can be changed into another prime (1123100533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561550256 + 561550257.

It is an arithmetic number, because the mean of its divisors is an integer number (561550257).

Almost surely, 2^1123100513 is an apocalyptic number.

It is an amenable number.

1123100513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123100513 is an equidigital number, since it uses as much as digits as its factorization.

1123100513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1123100513 is about 33512.6918196674. The cubic root of 1123100513 is about 1039.4562347871.

Adding to 1123100513 its reverse (3150013211), we get a palindrome (4273113724).

The spelling of 1123100513 in words is "one billion, one hundred twenty-three million, one hundred thousand, five hundred thirteen".