1200423113 has 2 divisors, whose sum is σ = 1200423114. Its totient is φ = 1200423112.

The previous prime is 1200423109. The next prime is 1200423151. The reversal of 1200423113 is 3113240021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1197367609 + 3055504 = 34603^2 + 1748^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200423113 - 2² = 1200423109 is a prime.

It is a super-2 number, since 2×1200423113² = 2882031300449221538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200423091 and 1200423100.

It is not a weakly prime, because it can be changed into another prime (1200483113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600211556 + 600211557.

It is an arithmetic number, because the mean of its divisors is an integer number (600211557).

Almost surely, 2^1200423113 is an apocalyptic number.

It is an amenable number.

1200423113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200423113 is an equidigital number, since it uses as much as digits as its factorization.

1200423113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1200423113 is about 34647.1227232508. The cubic root of 1200423113 is about 1062.7834502439.

Adding to 1200423113 its reverse (3113240021), we get a palindrome (4313663134).

The spelling of 1200423113 in words is "one billion, two hundred million, four hundred twenty-three thousand, one hundred thirteen".