623401123 has 8 divisors (see below), whose sum is σ = 647447040. Its totient is φ = 599734080.

The previous prime is 623401117. The next prime is 623401127. The reversal of 623401123 is 321104326.

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 623401123 - 2⁹ = 623400611 is a prime.

It is a super-2 number, since 2×623401123² = 777257920315322258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 623401094 and 623401103.

It is not an unprimeable number, because it can be changed into a prime (623401127) 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, 91363 + ... + 97948.

It is an arithmetic number, because the mean of its divisors is an integer number (80930880).

Almost surely, 2^623401123 is an apocalyptic number.

623401123 is a deficient number, since it is larger than the sum of its proper divisors (24045917).

623401123 is a wasteful number, since it uses less digits than its factorization.

623401123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189437.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 623401123 is about 24968.0019825376. The cubic root of 623401123 is about 854.2582730872.

Adding to 623401123 its reverse (321104326), we get a palindrome (944505449).

The spelling of 623401123 in words is "six hundred twenty-three million, four hundred one thousand, one hundred twenty-three".