123244020331 has 4 divisors (see below), whose sum is σ = 123260410152. Its totient is φ = 123227630512.

The previous prime is 123244020281. The next prime is 123244020337. The reversal of 123244020331 is 133020442321.

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

It is a cyclic number.

It is not a de Polignac number, because 123244020331 - 2²³ = 123235631723 is a prime.

It is a super-2 number, since 2×123244020331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123244020296 and 123244020305.

It is not an unprimeable number, because it can be changed into a prime (123244020337) 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, 8183626 + ... + 8198671.

It is an arithmetic number, because the mean of its divisors is an integer number (30815102538).

Almost surely, 2^123244020331 is an apocalyptic number.

123244020331 is a deficient number, since it is larger than the sum of its proper divisors (16389821).

123244020331 is an equidigital number, since it uses as much as digits as its factorization.

123244020331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16389820.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 123244020331 its reverse (133020442321), we get a palindrome (256264462652).

The spelling of 123244020331 in words is "one hundred twenty-three billion, two hundred forty-four million, twenty thousand, three hundred thirty-one".