232820001 has 28 divisors (see below), whose sum is σ = 350393940. Its totient is φ = 154625760.

The previous prime is 232819991. The next prime is 232820009. The reversal of 232820001 is 100028232.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59213025 + 173606976 = 7695^2 + 13176^2 .

It is not a de Polignac number, because 232820001 - 2¹⁰ = 232818977 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232820009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 283171 + ... + 283991.

Almost surely, 2^232820001 is an apocalyptic number.

It is an amenable number.

232820001 is a deficient number, since it is larger than the sum of its proper divisors (117573939).

232820001 is an frugal number, since it uses more digits than its factorization.

232820001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1213 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 232820001 is about 15258.4403200327. The cubic root of 232820001 is about 615.1864514981.

Adding to 232820001 its reverse (100028232), we get a palindrome (332848233).

The spelling of 232820001 in words is "two hundred thirty-two million, eight hundred twenty thousand, one".