223403521253 has 12 divisors (see below), whose sum is σ = 245618253804. Its totient is φ = 203045304000.

The previous prime is 223403521241. The next prime is 223403521277. The reversal of 223403521253 is 352125304322.

It can be written as a sum of positive squares in 2 ways, for example, as 8299574404 + 215103946849 = 91102^2 + 463793^2 .

It is not a de Polignac number, because 223403521253 - 2¹² = 223403517157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223403521853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288575 + ... + 728067.

It is an arithmetic number, because the mean of its divisors is an integer number (20468187817).

Almost surely, 2^223403521253 is an apocalyptic number.

It is an amenable number.

223403521253 is a deficient number, since it is larger than the sum of its proper divisors (22214732551).

223403521253 is a wasteful number, since it uses less digits than its factorization.

223403521253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443716 (or 443705 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 223403521253 its reverse (352125304322), we get a palindrome (575528825575).

The spelling of 223403521253 in words is "two hundred twenty-three billion, four hundred three million, five hundred twenty-one thousand, two hundred fifty-three".