623451231 has 24 divisors (see below), whose sum is σ = 973548576. Its totient is φ = 382184640.

The previous prime is 623451211. The next prime is 623451253. The reversal of 623451231 is 132154326.

623451231 is a `hidden beast` number, since 623 + 4 + 5 + 1 + 2 + 31 = 666.

623451231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 623451231 - 2¹³ = 623443039 is a prime.

It is a super-2 number, since 2×623451231² = 777382874870830722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 623451195 and 623451204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623451211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20641 + ... + 40901.

It is an arithmetic number, because the mean of its divisors is an integer number (40564524).

Almost surely, 2^623451231 is an apocalyptic number.

623451231 is a deficient number, since it is larger than the sum of its proper divisors (350097345).

623451231 is a wasteful number, since it uses less digits than its factorization.

623451231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20543 (or 20540 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 623451231 is about 24969.0054067037. The cubic root of 623451231 is about 854.2811604520.

The spelling of 623451231 in words is "six hundred twenty-three million, four hundred fifty-one thousand, two hundred thirty-one".