223240023506 has 4 divisors (see below), whose sum is σ = 334860035262. Its totient is φ = 111620011752.

The previous prime is 223240023469. The next prime is 223240023541. The reversal of 223240023506 is 605320042322.

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

It can be written as a sum of positive squares in only one way, i.e., 207940560025 + 15299463481 = 456005^2 + 123691^2 .

It is a super-3 number, since 3×223240023506³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55810005875 + ... + 55810005878.

Almost surely, 2^223240023506 is an apocalyptic number.

223240023506 is a deficient number, since it is larger than the sum of its proper divisors (111620011756).

223240023506 is a wasteful number, since it uses less digits than its factorization.

223240023506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111620011755.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 223240023506 its reverse (605320042322), we get a palindrome (828560065828).

The spelling of 223240023506 in words is "two hundred twenty-three billion, two hundred forty million, twenty-three thousand, five hundred six".