223255631 has 2 divisors, whose sum is σ = 223255632. Its totient is φ = 223255630.

The previous prime is 223255621. The next prime is 223255633. The reversal of 223255631 is 136552322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223255631 - 2¹⁰ = 223254607 is a prime.

It is a super-3 number, since 3×223255631³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 223255633, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 223255594 and 223255603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223255633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111627815 + 111627816.

It is an arithmetic number, because the mean of its divisors is an integer number (111627816).

Almost surely, 2^223255631 is an apocalyptic number.

223255631 is a deficient number, since it is larger than the sum of its proper divisors (1).

223255631 is an equidigital number, since it uses as much as digits as its factorization.

223255631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 29.

The square root of 223255631 is about 14941.7412305260. The cubic root of 223255631 is about 606.6443267881.

The spelling of 223255631 in words is "two hundred twenty-three million, two hundred fifty-five thousand, six hundred thirty-one".