223000031 has 2 divisors, whose sum is σ = 223000032. Its totient is φ = 223000030.

The previous prime is 223000013. The next prime is 223000039. The reversal of 223000031 is 130000322.

Together with previous prime (223000013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223000031 - 2²⁶ = 155891167 is a prime.

It is a super-2 number, since 2×223000031² = 99458027652001922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 222999976 and 223000021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223000039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111500015 + 111500016.

It is an arithmetic number, because the mean of its divisors is an integer number (111500016).

Almost surely, 2^223000031 is an apocalyptic number.

223000031 is a deficient number, since it is larger than the sum of its proper divisors (1).

223000031 is an equidigital number, since it uses as much as digits as its factorization.

223000031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 223000031 is about 14933.1855610248. The cubic root of 223000031 is about 606.4127275505.

Adding to 223000031 its reverse (130000322), we get a palindrome (353000353).

The spelling of 223000031 in words is "two hundred twenty-three million, thirty-one", and thus it is an aban number.