223078231 has 2 divisors, whose sum is σ = 223078232. Its totient is φ = 223078230.

The previous prime is 223078223. The next prime is 223078277. The reversal of 223078231 is 132870322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223078231 - 2³ = 223078223 is a prime.

It is a super-3 number, since 3×223078231³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 223078231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223078211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111539115 + 111539116.

It is an arithmetic number, because the mean of its divisors is an integer number (111539116).

Almost surely, 2^223078231 is an apocalyptic number.

223078231 is a deficient number, since it is larger than the sum of its proper divisors (1).

223078231 is an equidigital number, since it uses as much as digits as its factorization.

223078231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 223078231 is about 14935.8036610020. The cubic root of 223078231 is about 606.4836033751.

The spelling of 223078231 in words is "two hundred twenty-three million, seventy-eight thousand, two hundred thirty-one".