123331031330 has 16 divisors (see below), whose sum is σ = 239072460984. Its totient is φ = 45537611520.

The previous prime is 123331031267. The next prime is 123331031339. The reversal of 123331031330 is 33130133321.

It can be written as a sum of positive squares in 4 ways, for example, as 63806254801 + 59524776529 = 252599^2 + 243977^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123331031296 and 123331031305.

It is not an unprimeable number, because it can be changed into a prime (123331031339) 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 in 7 ways as a sum of consecutive naturals, for example, 474349991 + ... + 474350250.

Almost surely, 2^123331031330 is an apocalyptic number.

123331031330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123331031330 is a deficient number, since it is larger than the sum of its proper divisors (115741429654).

123331031330 is a wasteful number, since it uses less digits than its factorization.

123331031330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948700261.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 123331031330 its reverse (33130133321), we get a palindrome (156461164651).

The spelling of 123331031330 in words is "one hundred twenty-three billion, three hundred thirty-one million, thirty-one thousand, three hundred thirty".