123331230440 has 32 divisors (see below), whose sum is σ = 302722112160. Its totient is φ = 44847720000.

The previous prime is 123331230419. The next prime is 123331230443. The reversal of 123331230440 is 44032133321.

It is not an unprimeable number, because it can be changed into a prime (123331230443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140148686 + ... + 140149565.

It is an arithmetic number, because the mean of its divisors is an integer number (9460066005).

Almost surely, 2^123331230440 is an apocalyptic number.

123331230440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123331230440 is an abundant number, since it is smaller than the sum of its proper divisors (179390881720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123331230440 is a wasteful number, since it uses less digits than its factorization.

123331230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280298273 (or 280298269 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 123331230440 its reverse (44032133321), we get a palindrome (167363363761).

The spelling of 123331230440 in words is "one hundred twenty-three billion, three hundred thirty-one million, two hundred thirty thousand, four hundred forty".