16222631 has 2 divisors, whose sum is σ = 16222632. Its totient is φ = 16222630.

The previous prime is 16222553. The next prime is 16222639. The reversal of 16222631 is 13622261.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16222631 is a prime.

It is a super-2 number, since 2×16222631² = 526347513124322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16222597 and 16222606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16222639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8111315 + 8111316.

It is an arithmetic number, because the mean of its divisors is an integer number (8111316).

Almost surely, 2^16222631 is an apocalyptic number.

16222631 is a deficient number, since it is larger than the sum of its proper divisors (1).

16222631 is an equidigital number, since it uses as much as digits as its factorization.

16222631 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 16222631 is about 4027.7327369129. The cubic root of 16222631 is about 253.1475702274.

Adding to 16222631 its reverse (13622261), we get a palindrome (29844892).

The spelling of 16222631 in words is "sixteen million, two hundred twenty-two thousand, six hundred thirty-one".