222746831 has 2 divisors, whose sum is σ = 222746832. Its totient is φ = 222746830.

The previous prime is 222746819. The next prime is 222746833. The reversal of 222746831 is 138647222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222746831 - 2¹⁰ = 222745807 is a prime.

It is a super-2 number, since 2×222746831² = 99232301441085122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 222746833, 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 = 222746791 and 222746800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222746833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111373415 + 111373416.

It is an arithmetic number, because the mean of its divisors is an integer number (111373416).

Almost surely, 2^222746831 is an apocalyptic number.

222746831 is a deficient number, since it is larger than the sum of its proper divisors (1).

222746831 is an equidigital number, since it uses as much as digits as its factorization.

222746831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 222746831 is about 14924.7053907271. The cubic root of 222746831 is about 606.1831284019.

The spelling of 222746831 in words is "two hundred twenty-two million, seven hundred forty-six thousand, eight hundred thirty-one".