1213134113 has 2 divisors, whose sum is σ = 1213134114. Its totient is φ = 1213134112.

The previous prime is 1213134107. The next prime is 1213134137. The reversal of 1213134113 is 3114313121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1072759009 + 140375104 = 32753^2 + 11848^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213134113 - 2¹⁸ = 1212871969 is a prime.

It is a super-2 number, since 2×1213134113² = 2943388752248593538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1213134193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606567056 + 606567057.

It is an arithmetic number, because the mean of its divisors is an integer number (606567057).

Almost surely, 2^1213134113 is an apocalyptic number.

It is an amenable number.

1213134113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213134113 is an equidigital number, since it uses as much as digits as its factorization.

1213134113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 20.

The square root of 1213134113 is about 34830.0748348320. The cubic root of 1213134113 is about 1066.5214760172.

Adding to 1213134113 its reverse (3114313121), we get a palindrome (4327447234).

The spelling of 1213134113 in words is "one billion, two hundred thirteen million, one hundred thirty-four thousand, one hundred thirteen".