123731207441 has 4 divisors (see below), whose sum is σ = 123953346612. Its totient is φ = 123509068272.

The previous prime is 123731207429. The next prime is 123731207449. The reversal of 123731207441 is 144702137321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78615748225 + 45115459216 = 280385^2 + 212404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123731207441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123731207449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111068750 + ... + 111069863.

It is an arithmetic number, because the mean of its divisors is an integer number (30988336653).

Almost surely, 2^123731207441 is an apocalyptic number.

It is an amenable number.

123731207441 is a deficient number, since it is larger than the sum of its proper divisors (222139171).

123731207441 is an equidigital number, since it uses as much as digits as its factorization.

123731207441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222139170.

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 123731207441 in words is "one hundred twenty-three billion, seven hundred thirty-one million, two hundred seven thousand, four hundred forty-one".