223235405513 has 4 divisors (see below), whose sum is σ = 227985095040. Its totient is φ = 218485715988.

The previous prime is 223235405509. The next prime is 223235405539. The reversal of 223235405513 is 315504532322.

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.

It is a cyclic number.

It is not a de Polignac number, because 223235405513 - 2² = 223235405509 is a prime.

It is a super-3 number, since 3×223235405513³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223235405563) 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, 2374844693 + ... + 2374844786.

It is an arithmetic number, because the mean of its divisors is an integer number (56996273760).

Almost surely, 2^223235405513 is an apocalyptic number.

It is an amenable number.

223235405513 is a deficient number, since it is larger than the sum of its proper divisors (4749689527).

223235405513 is an equidigital number, since it uses as much as digits as its factorization.

223235405513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749689526.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 223235405513 its reverse (315504532322), we get a palindrome (538739937835).

The spelling of 223235405513 in words is "two hundred twenty-three billion, two hundred thirty-five million, four hundred five thousand, five hundred thirteen".