123400343 has 8 divisors (see below), whose sum is σ = 136515456. Its totient is φ = 110601400.

The previous prime is 123400337. The next prime is 123400351. The reversal of 123400343 is 343004321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123400343 - 2⁶ = 123400279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123400363) 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, 78221 + ... + 79782.

It is an arithmetic number, because the mean of its divisors is an integer number (17064432).

Almost surely, 2^123400343 is an apocalyptic number.

123400343 is a deficient number, since it is larger than the sum of its proper divisors (13115113).

123400343 is a wasteful number, since it uses less digits than its factorization.

123400343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158085.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 123400343 is about 11108.5707001396. The cubic root of 123400343 is about 497.8579604375.

Adding to 123400343 its reverse (343004321), we get a palindrome (466404664).

The spelling of 123400343 in words is "one hundred twenty-three million, four hundred thousand, three hundred forty-three".