1316222231 has 2 divisors, whose sum is σ = 1316222232. Its totient is φ = 1316222230.

The previous prime is 1316222213. The next prime is 1316222261. The reversal of 1316222231 is 1322226131.

Together with previous prime (1316222213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1316222231 is a prime.

It is a super-2 number, since 2×1316222231² = 3464881922757234722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1316222197 and 1316222206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316222261) 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, 658111115 + 658111116.

It is an arithmetic number, because the mean of its divisors is an integer number (658111116).

Almost surely, 2^1316222231 is an apocalyptic number.

1316222231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316222231 is an equidigital number, since it uses as much as digits as its factorization.

1316222231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 1316222231 is about 36279.7771630422. Note that the first 3 decimals coincide. The cubic root of 1316222231 is about 1095.9138291492.

Adding to 1316222231 its reverse (1322226131), we get a palindrome (2638448362).

The spelling of 1316222231 in words is "one billion, three hundred sixteen million, two hundred twenty-two thousand, two hundred thirty-one".