223701431 has 2 divisors, whose sum is σ = 223701432. Its totient is φ = 223701430.

The previous prime is 223701407. The next prime is 223701433. The reversal of 223701431 is 134107322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223701431 is a prime.

It is a super-2 number, since 2×223701431² = 100084660462895522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 223701433, 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 = 223701397 and 223701406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223701433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111850715 + 111850716.

It is an arithmetic number, because the mean of its divisors is an integer number (111850716).

Almost surely, 2^223701431 is an apocalyptic number.

223701431 is a deficient number, since it is larger than the sum of its proper divisors (1).

223701431 is an equidigital number, since it uses as much as digits as its factorization.

223701431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 223701431 is about 14956.6517309189. The cubic root of 223701431 is about 607.0478436469.

Adding to 223701431 its reverse (134107322), we get a palindrome (357808753).

The spelling of 223701431 in words is "two hundred twenty-three million, seven hundred one thousand, four hundred thirty-one".