623312001 has 24 divisors (see below), whose sum is σ = 976597440. Its totient is φ = 380807136.

The previous prime is 623311999. The next prime is 623312003. The reversal of 623312001 is 100213326.

It is an interprime number because it is at equal distance from previous prime (623311999) and next prime (623312003).

It is not a de Polignac number, because 623312001 - 2¹ = 623311999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (623312003) 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, 2901 + ... + 35426.

It is an arithmetic number, because the mean of its divisors is an integer number (40691560).

Almost surely, 2^623312001 is an apocalyptic number.

It is an amenable number.

623312001 is a deficient number, since it is larger than the sum of its proper divisors (353285439).

623312001 is a wasteful number, since it uses less digits than its factorization.

623312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38485 (or 38482 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 623312001 is about 24966.2171944410. The cubic root of 623312001 is about 854.2175626300.

Adding to 623312001 its reverse (100213326), we get a palindrome (723525327).

The spelling of 623312001 in words is "six hundred twenty-three million, three hundred twelve thousand, one".