233001421 has 4 divisors (see below), whose sum is σ = 233049852. Its totient is φ = 232952992.

The previous prime is 233001413. The next prime is 233001437. The reversal of 233001421 is 124100332.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97022500 + 135978921 = 9850^2 + 11661^2 .

It is a cyclic number.

It is not a de Polignac number, because 233001421 - 2³ = 233001413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233001395 and 233001404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233001121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16090 + ... + 26923.

It is an arithmetic number, because the mean of its divisors is an integer number (58262463).

Almost surely, 2^233001421 is an apocalyptic number.

It is an amenable number.

233001421 is a deficient number, since it is larger than the sum of its proper divisors (48431).

233001421 is an equidigital number, since it uses as much as digits as its factorization.

233001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48430.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 233001421 is about 15264.3840688054. The cubic root of 233001421 is about 615.3462003011.

Adding to 233001421 its reverse (124100332), we get a palindrome (357101753).

The spelling of 233001421 in words is "two hundred thirty-three million, one thousand, four hundred twenty-one".