123431311241 has 4 divisors (see below), whose sum is σ = 141064355712. Its totient is φ = 105798266772.

The previous prime is 123431311177. The next prime is 123431311309. The reversal of 123431311241 is 142113134321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123431311241 - 2⁶ = 123431311177 is a prime.

It is a super-2 number, since 2×123431311241² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123431311241.

It is not an unprimeable number, because it can be changed into a prime (123431313241) 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, 8816522225 + ... + 8816522238.

It is an arithmetic number, because the mean of its divisors is an integer number (35266088928).

Almost surely, 2^123431311241 is an apocalyptic number.

It is an amenable number.

123431311241 is a deficient number, since it is larger than the sum of its proper divisors (17633044471).

123431311241 is an equidigital number, since it uses as much as digits as its factorization.

123431311241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17633044470.

The product of its digits is 1728, while the sum is 26.

Adding to 123431311241 its reverse (142113134321), we get a palindrome (265544445562).

The spelling of 123431311241 in words is "one hundred twenty-three billion, four hundred thirty-one million, three hundred eleven thousand, two hundred forty-one".