234520405 has 8 divisors (see below), whose sum is σ = 321628032. Its totient is φ = 160813968.

The previous prime is 234520373. The next prime is 234520411. The reversal of 234520405 is 504025432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 234520405 - 2⁵ = 234520373 is a prime.

It is a super-2 number, since 2×234520405² = 109999640722728050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 234520405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3350257 + ... + 3350326.

It is an arithmetic number, because the mean of its divisors is an integer number (40203504).

Almost surely, 2^234520405 is an apocalyptic number.

It is an amenable number.

234520405 is a deficient number, since it is larger than the sum of its proper divisors (87107627).

234520405 is an equidigital number, since it uses as much as digits as its factorization.

234520405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700595.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 234520405 is about 15314.0590634880. The cubic root of 234520405 is about 616.6804942926.

Adding to 234520405 its reverse (504025432), we get a palindrome (738545837).

The spelling of 234520405 in words is "two hundred thirty-four million, five hundred twenty thousand, four hundred five".