223145535321 has 48 divisors (see below), whose sum is σ = 340592824000. Its totient is φ = 140392103040.

The previous prime is 223145535311. The next prime is 223145535373. The reversal of 223145535321 is 123535541322.

223145535321 is a `hidden beast` number, since 2 + 2 + 31 + 4 + 553 + 53 + 21 = 666.

It is not a de Polignac number, because 223145535321 - 2³³ = 214555600729 is a prime.

It is a super-3 number, since 3×223145535321³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223145535311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59678670 + ... + 59682408.

Almost surely, 2^223145535321 is an apocalyptic number.

It is an amenable number.

223145535321 is a deficient number, since it is larger than the sum of its proper divisors (117447288679).

223145535321 is a wasteful number, since it uses less digits than its factorization.

223145535321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014 (or 5011 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The spelling of 223145535321 in words is "two hundred twenty-three billion, one hundred forty-five million, five hundred thirty-five thousand, three hundred twenty-one".