223136381 has 16 divisors (see below), whose sum is σ = 247545984. Its totient is φ = 199796544.

The previous prime is 223136359. The next prime is 223136383. The reversal of 223136381 is 183631322.

It is a cyclic number.

It is not a de Polignac number, because 223136381 - 2¹⁰ = 223135357 is a prime.

It is a super-3 number, since 3×223136381³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223136383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251120 + ... + 252006.

It is an arithmetic number, because the mean of its divisors is an integer number (15471624).

Almost surely, 2^223136381 is an apocalyptic number.

It is an amenable number.

223136381 is a deficient number, since it is larger than the sum of its proper divisors (24409603).

223136381 is a wasteful number, since it uses less digits than its factorization.

223136381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460.

The product of its digits is 5184, while the sum is 29.

The square root of 223136381 is about 14937.7501987414. The cubic root of 223136381 is about 606.5362963362.

The spelling of 223136381 in words is "two hundred twenty-three million, one hundred thirty-six thousand, three hundred eighty-one".