123412313332440 has 128 divisors (see below), whose sum is σ = 448772048524800. Its totient is φ = 29918136562560.

The previous prime is 123412313332393. The next prime is 123412313332457. The reversal of 123412313332440 is 44233313214321.

123412313332440 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 1 + 2 + 313 + 332 + 4 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 123412313332395 and 123412313332404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5194109052 + ... + 5194132811.

It is an arithmetic number, because the mean of its divisors is an integer number (3506031629100).

Almost surely, 2^{123412313332440} is an apocalyptic number.

123412313332440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123412313332440 is an abundant number, since it is smaller than the sum of its proper divisors (325359735192360).

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

123412313332440 is a wasteful number, since it uses less digits than its factorization.

123412313332440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10388241894 (or 10388241884 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 123412313332440 its reverse (44233313214321), we get a palindrome (167645626546761).

The spelling of 123412313332440 in words is "one hundred twenty-three trillion, four hundred twelve billion, three hundred thirteen million, three hundred thirty-two thousand, four hundred forty".