223149631 has 2 divisors, whose sum is σ = 223149632. Its totient is φ = 223149630.

The previous prime is 223149617. The next prime is 223149637. The reversal of 223149631 is 136941322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223149631 - 2⁷ = 223149503 is a prime.

It is a super-3 number, since 3×223149631³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 223149593 and 223149602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223149637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111574815 + 111574816.

It is an arithmetic number, because the mean of its divisors is an integer number (111574816).

Almost surely, 2^223149631 is an apocalyptic number.

223149631 is a deficient number, since it is larger than the sum of its proper divisors (1).

223149631 is an equidigital number, since it uses as much as digits as its factorization.

223149631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 223149631 is about 14938.1936993734. The cubic root of 223149631 is about 606.5483016202.

The spelling of 223149631 in words is "two hundred twenty-three million, one hundred forty-nine thousand, six hundred thirty-one".