123541213 has 2 divisors, whose sum is σ = 123541214. Its totient is φ = 123541212.

The previous prime is 123541199. The next prime is 123541219. The reversal of 123541213 is 312145321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92871769 + 30669444 = 9637^2 + 5538^2 .

It is a cyclic number.

It is not a de Polignac number, because 123541213 - 2¹³ = 123533021 is a prime.

It is a super-2 number, since 2×123541213² = 30524862619022738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123541219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61770606 + 61770607.

It is an arithmetic number, because the mean of its divisors is an integer number (61770607).

Almost surely, 2^123541213 is an apocalyptic number.

It is an amenable number.

123541213 is a deficient number, since it is larger than the sum of its proper divisors (1).

123541213 is an equidigital number, since it uses as much as digits as its factorization.

123541213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 123541213 is about 11114.9094913094. The cubic root of 123541213 is about 498.0473347909.

Adding to 123541213 its reverse (312145321), we get a palindrome (435686534).

The spelling of 123541213 in words is "one hundred twenty-three million, five hundred forty-one thousand, two hundred thirteen".