123441013 has 2 divisors, whose sum is σ = 123441014. Its totient is φ = 123441012.

The previous prime is 123441007. The next prime is 123441053. The reversal of 123441013 is 310144321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76422564 + 47018449 = 8742^2 + 6857^2 .

It is an emirp because it is prime and its reverse (310144321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123441013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123441053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61720506 + 61720507.

It is an arithmetic number, because the mean of its divisors is an integer number (61720507).

Almost surely, 2^123441013 is an apocalyptic number.

It is an amenable number.

123441013 is a deficient number, since it is larger than the sum of its proper divisors (1).

123441013 is an equidigital number, since it uses as much as digits as its factorization.

123441013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 123441013 is about 11110.4011178715. The cubic root of 123441013 is about 497.9126487222.

Adding to 123441013 its reverse (310144321), we get a palindrome (433585334).

It can be divided in two parts, 12 and 3441013, that added together give a square (3441025 = 1855²).

The spelling of 123441013 in words is "one hundred twenty-three million, four hundred forty-one thousand, thirteen".