223156381 has 8 divisors (see below), whose sum is σ = 255346560. Its totient is φ = 191043888.

The previous prime is 223156379. The next prime is 223156393. The reversal of 223156381 is 183651322.

223156381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 223156381 - 2¹ = 223156379 is a prime.

It is a super-3 number, since 3×223156381³ (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 (223156301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13126 + ... + 24871.

It is an arithmetic number, because the mean of its divisors is an integer number (31918320).

Almost surely, 2^223156381 is an apocalyptic number.

It is an amenable number.

223156381 is a deficient number, since it is larger than the sum of its proper divisors (32190179).

223156381 is an equidigital number, since it uses as much as digits as its factorization.

223156381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38843.

The product of its digits is 8640, while the sum is 31.

The square root of 223156381 is about 14938.4196285953. The cubic root of 223156381 is about 606.5544173368.

The spelling of 223156381 in words is "two hundred twenty-three million, one hundred fifty-six thousand, three hundred eighty-one".