233401340021 has 4 divisors (see below), whose sum is σ = 233402313312. Its totient is φ = 233400366732.

The previous prime is 233401340017. The next prime is 233401340069. The reversal of 233401340021 is 120043104332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 233401340021 - 2² = 233401340017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233401340071) 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, 155576 + ... + 700718.

It is an arithmetic number, because the mean of its divisors is an integer number (58350578328).

Almost surely, 2^233401340021 is an apocalyptic number.

It is an amenable number.

233401340021 is a deficient number, since it is larger than the sum of its proper divisors (973291).

233401340021 is an equidigital number, since it uses as much as digits as its factorization.

233401340021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973290.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 233401340021 its reverse (120043104332), we get a palindrome (353444444353).

The spelling of 233401340021 in words is "two hundred thirty-three billion, four hundred one million, three hundred forty thousand, twenty-one".