123311440230 has 64 divisors (see below), whose sum is σ = 323145427968. Its totient is φ = 29866492160.

The previous prime is 123311440177. The next prime is 123311440271. The reversal of 123311440230 is 32044113321.

It is a happy number.

123311440230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×123311440230² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123311440230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194602 + ... + 533378.

It is an arithmetic number, because the mean of its divisors is an integer number (5049147312).

Almost surely, 2^123311440230 is an apocalyptic number.

123311440230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123311440230 is an abundant number, since it is smaller than the sum of its proper divisors (199833987738).

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

123311440230 is a wasteful number, since it uses less digits than its factorization.

123311440230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339901.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 123311440230 its reverse (32044113321), we get a palindrome (155355553551).

The spelling of 123311440230 in words is "one hundred twenty-three billion, three hundred eleven million, four hundred forty thousand, two hundred thirty".