123343400 has 24 divisors (see below), whose sum is σ = 286773870. Its totient is φ = 49337280.

The previous prime is 123343399. The next prime is 123343417. The reversal of 123343400 is 4343321.

It can be written as a sum of positive squares in 3 ways, for example, as 82919236 + 40424164 = 9106^2 + 6358^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308159 + ... + 308558.

Almost surely, 2^123343400 is an apocalyptic number.

123343400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123343400 is an abundant number, since it is smaller than the sum of its proper divisors (163430470).

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

123343400 is a wasteful number, since it uses less digits than its factorization.

123343400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616733 (or 616724 counting only the distinct ones).

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

The square root of 123343400 is about 11106.0073833939. The cubic root of 123343400 is about 497.7813699222.

Adding to 123343400 its reverse (4343321), we get a palindrome (127686721).

The spelling of 123343400 in words is "one hundred twenty-three million, three hundred forty-three thousand, four hundred".